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Li S, Zhang H, Zhu M, Kuang Z, Li X, Xu F, Miao S, Zhang Z, Lou X, Li H, Xia F. Electrochemical Biosensors for Whole Blood Analysis: Recent Progress, Challenges, and Future Perspectives. Chem Rev 2023. [PMID: 37262362 DOI: 10.1021/acs.chemrev.1c00759] [Citation(s) in RCA: 39] [Impact Index Per Article: 39.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Whole blood, as one of the most significant biological fluids, provides critical information for health management and disease monitoring. Over the past 10 years, advances in nanotechnology, microfluidics, and biomarker research have spurred the development of powerful miniaturized diagnostic systems for whole blood testing toward the goal of disease monitoring and treatment. Among the techniques employed for whole-blood diagnostics, electrochemical biosensors, as known to be rapid, sensitive, capable of miniaturization, reagentless and washing free, become a class of emerging technology to achieve the target detection specifically and directly in complex media, e.g., whole blood or even in the living body. Here we are aiming to provide a comprehensive review to summarize advances over the past decade in the development of electrochemical sensors for whole blood analysis. Further, we address the remaining challenges and opportunities to integrate electrochemical sensing platforms.
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Affiliation(s)
- Shaoguang Li
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Hongyuan Zhang
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Man Zhu
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Zhujun Kuang
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Xun Li
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Fan Xu
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Siyuan Miao
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Zishuo Zhang
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Xiaoding Lou
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Hui Li
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Fan Xia
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
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2
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Aptamer-functionalized capacitive biosensors. Biosens Bioelectron 2023; 224:115014. [PMID: 36628826 DOI: 10.1016/j.bios.2022.115014] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 11/17/2022] [Accepted: 12/13/2022] [Indexed: 12/25/2022]
Abstract
The growing use of aptamers as target recognition elements in label-free biosensing necessitates corresponding transducers that can be used in relevant environments. While popular in many fields, capacitive sensors have seen relatively little, but growing use in conjunction with aptamers for sensing diverse targets. Few reports have shown physiologically relevant sensitivity in laboratory conditions and a cohesive picture on how target capture modifies the measured capacitance has been lacking. In this review, we assess the current state of the field in three areas: small molecule, protein, and cell sensing. We critically analyze the proposed hypotheses on how aptamer-target capture modifies the capacitance, as many mechanistic postulations appear to conflict between published works. As the field matures, we encourage future works to investigate individual aptamer-target interactions and to interrogate the physical mechanisms leading to measured changes in capacitance. To this point, we provide recommendations on best practices for developing aptasensors with a particular focus on considerations for biosensing in clinical settings.
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3
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Diamonds for Life: Developments in Sensors for Biomolecules. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12063000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
Diamond-based electrodes and biosensors are interesting in analytics because of their particular set of properties, namely: large potential window, chemical inertness, low baseline current, stability, and transparency. Diamond-based electrodes and biosensors were shown to detect biological molecules such as neurotransmitters and proteins, respectively. In this review, we summarise the different types of diamond electrodes and biosensors based on their type of detection (electrochemical or optical), functionalisation, and target analyte. The last section presents a discussion on the different analytical responses obtained with electrodes or biosensors, according to the type of analyte. Electrodes work quite well for detecting small molecules with redox properties, whereas biosensors are more suited for detecting molecules with a high molecular weight, such as DNA and proteins.
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4
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Krátká M, Čermák J, Vachelová J, Davídková M, Romanyuk N, Kromka A, Rezek B. Gamma radiation effects on diamond field-effect biosensors with fibroblasts and extracellular matrix. Colloids Surf B Biointerfaces 2021; 204:111689. [PMID: 33932892 DOI: 10.1016/j.colsurfb.2021.111689] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 08/17/2020] [Accepted: 03/06/2021] [Indexed: 01/05/2023]
Abstract
Due to high biocompatibility, miniaturization, optical transparency and low production cost together with high radiation hardness the diamond-based sensors are considered promising for radiation medicine and biomedicine in general. Here we present detection of fibroblast cell culture properties by nanocrystalline diamond solution-gated field-effect transistors (SG-FET), including effects of gamma irradiation. We show that blank nanocrystalline diamond field-effect biosensors are stable at least up to 300 Gy of γ irradiation. On the other hand, gate current of the diamond SG-FET biosensors with fibroblastic cells increases exponentially over an order of magnitude with increasing radiation dose. Extracellular matrix (ECM) formation is also detected and analyzed by correlation of electronic sensor data with optical, atomic force, fluorescence, and scanning electron microscopies.
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Affiliation(s)
- Marie Krátká
- Institute of Physics CAS, Cukrovarnická 10, 16200, Prague 6, Czech Republic.
| | - Jan Čermák
- Institute of Physics CAS, Cukrovarnická 10, 16200, Prague 6, Czech Republic
| | - Jana Vachelová
- Nuclear Physics Institute CAS, Řež 130, 25068, Řež, Czech Republic
| | - Marie Davídková
- Nuclear Physics Institute CAS, Řež 130, 25068, Řež, Czech Republic
| | - Nataliya Romanyuk
- Deparment of Neuroregeneration, Institute of Experimental Medicine CAS, Vídeňská 1083, 14220, Prague, Czech Republic
| | - Alexander Kromka
- Institute of Physics CAS, Cukrovarnická 10, 16200, Prague 6, Czech Republic
| | - Bohuslav Rezek
- Faculty of Electrical Engineering, Czech Technical University, Technická 2, 16627, Prague, Czech Republic
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Bognár Z, Gyurcsányi RE. Aptamers against Immunoglobulins: Design, Selection and Bioanalytical Applications. Int J Mol Sci 2020; 21:E5748. [PMID: 32796581 PMCID: PMC7461046 DOI: 10.3390/ijms21165748] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 07/26/2020] [Accepted: 08/06/2020] [Indexed: 12/11/2022] Open
Abstract
Nucleic acid aptamers show clear promise as diagnostic reagents, as highly specific strands were reported against a large variety of biomarkers. They have appealing benefits in terms of reproducible generation by chemical synthesis, controlled modification with labels and functionalities providing versatile means for detection and oriented immobilization, as along with high biochemical and temperature resistance. Aptamers against immunoglobulin targets-IgA, IgM, IgG and IgE-have a clear niche for diagnostic applications, therefore numerous aptamers have been selected and used in combination with a variety of detection techniques. The aim of this review is to overview and evaluate aptamers selected for the recognition of antibodies, in terms of their design, analytical properties and diagnostic applications. Aptamer candidates showed convincing performance among others to identify stress and upper respiratory tract infection through SIgA detection, for cancer cell recognition using membrane bound IgM, to detect and treat hemolytic transfusion reactions, autoimmune diseases with IgG and detection of IgE for allergy diseases. However, in general, their use still lags significantly behind what their claimed benefits and the plethora of application opportunities would forecast.
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Affiliation(s)
| | - Róbert E. Gyurcsányi
- BME “Lendület” Chemical Nanosensors Research Group, Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Szent Gellért tér 4, H-1111 Budapest, Hungary;
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Impedimetric Aptamer-Based Biosensors: Applications. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2020; 174:43-91. [PMID: 32313965 DOI: 10.1007/10_2020_125] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Impedimetric aptamer-based biosensors show high potential for handheld devices and point-of-care tests. In this review, we report on recent advances in aptamer-based impedimetric biosensors for applications in biotechnology. We detail on analytes relevant in medical and environmental biotechnology as well as food control, for which aptamer-based impedimetric biosensors were developed. The reviewed biosensors are examined for their performance, including sensitivity, selectivity, response time, and real sample validation. Additionally, the benefits and challenges of impedimetric aptasensors are summarized.
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Jarczewska M, Malinowska E. The application of antibody-aptamer hybrid biosensors in clinical diagnostics and environmental analysis. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2020; 12:3183-3199. [PMID: 32930180 DOI: 10.1039/d0ay00678e] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The growing number of various diseases and the increase of environmental contamination are the causes for the development of novel methods for their detection. The possibility of the application of affinity-based biosensors for such purposes seems particularly promising as they provide high selectivity and low detection limits. Recently, the usage of hybrid antibody-aptamer sandwich constructs was shown to be more advantageous in terms of working parameters in comparison to aptamer-based and immune-based biosensors. This review is focused on the usage of hybrid antibody-aptamer receptor layers for the determination of clinically and environmentally important target molecules. In this work, antibodies and aptamer molecules are characterized and the methods of their immobilization as well as analytical signal generation are shown. This is followed by the critical presentation of examples of hybrid sandwich biosensors that have been elaborated in the past 12 years.
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Affiliation(s)
- Marta Jarczewska
- The Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, Warsaw, 00-664, Poland.
| | - Elżbieta Malinowska
- The Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, Warsaw, 00-664, Poland.
- Centre for Advanced Materials and Technologies CEZAMAT, Poleczki 19, 02-822 Warsaw, Poland
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8
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Abstract
Aptasensors form a class of biosensors that function on the basis of a biological recognition. An aptasensor is advantageous because it incorporates a unique biologic recognition element, i.e., an aptamer, coupled to a transducer to convert a biological interaction to readable signals that can be easily processed and reported. In such biosensors, the specificity of aptamers is comparable to and sometimes even better than that of antibodies. Using the SELEX technique, aptamers with high specificity and affinity to various targets can be isolated from large pools of different oligonucleotides. Nowadays, new modifications of the SELEX technique and, as a result, easy generation and synthesis of aptamers have led to the wide application of these materials as biological receptors in biosensors. In this regard, aptamers promise a bright future. In the present research a brief account is initially provided of the recent developments in aptasensors for various targets. Then, immobilization methods, design strategies, current limitations and future directions are discussed for aptasensors.
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Affiliation(s)
- Laleh Hosseinzadeh
- Department of Chemistry, Dehloran Branch, Islamic Azad University, Dehloran, Iran
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9
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Sigaeva A, Morita A, Hemelaar SR, Schirhagl R. Nanodiamond uptake in colon cancer cells: the influence of direction and trypsin-EDTA treatment. NANOSCALE 2019; 11:17357-17367. [PMID: 31517372 DOI: 10.1039/c9nr04228h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Nanoparticles are routinely used in cell biology. They deliver drugs or function as labels or sensors. For many of these applications it is essential that the nanoparticles enter the cells. While some cell types readily ingest all kinds of particles, others just don't. We report that uptake can be enhanced for some cells if the particles are administered from the basolateral side of the cells (in this case from below). Compared to apical uptake (from above), we report an 8-fold increase in the number of fluorescent nanodiamonds internalized by the colon cancer cell line HT29. Up to 96% of the cells treated by a modified protocol contain at least one nanodiamond, whereas in the control group we could observe nanodiamonds in less than half of the cells. We were also able to show that simple treatment of cell clusters with trypsin-EDTA leads to the same enhancement of the nanodiamond uptake as seeding the cells on top of the nanoparticles. Although our study is focused on nanodiamonds in HT29 cells, we believe that this method could also be applicable for other nanoparticles and cells with a specific directionality.
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Affiliation(s)
- Alina Sigaeva
- University Medical Center Groningen, Antonius Deusinglaan 1, 9713 AV Gronigen, The Netherlands.
| | - Aryan Morita
- University Medical Center Groningen, Antonius Deusinglaan 1, 9713 AV Gronigen, The Netherlands. and Department of Dental Biomedical Sciences, Faculty of Dentistry, Universitas Gadjah, Mada, Jl Denta 1, 55281 Yogyakarta, Indonesia
| | - Simon R Hemelaar
- University Medical Center Groningen, Antonius Deusinglaan 1, 9713 AV Gronigen, The Netherlands.
| | - R Schirhagl
- University Medical Center Groningen, Antonius Deusinglaan 1, 9713 AV Gronigen, The Netherlands.
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10
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Nazari M, Gargari SLM, Sahebghadam Lotfi A, Rassaee MJ, Taheri RA. Aptamer-Based Sandwich Assay for Measurement of Thymidine Kinase 1 in Serum of Cancerous Patients. Biochemistry 2019; 58:2373-2383. [PMID: 30900869 DOI: 10.1021/acs.biochem.8b01284] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Thymidine kinase 1 (TK1) is traditionally a serum biomarker that is elevated in the early stages of malignancies. The diagnostic and prognostic role of TK1 for screening and monitoring human malignancies has recently been investigated. Anti-human TK1 aptamers were selected through 12 iterative rounds of systematic evolution of ligands by exponential enrichment from a DNA library. The aptamer pool of round 12 was amplified, and the polymerase chain reaction product was cloned on the TA vector. Of the 85 colonies obtained, 52 were identified as positive clones. These aptamers were screened for TK1 with surface plasmon resonance, where apta37 and apta69 showed the highest affinity for TK1. The TK1_apta37 and TK1_apta69 aptamers were used in a sandwich assay platform and successfully detected TK1 in the concentration range of 54-3500 pg mL-1. Clinical samples from 60 cancerous patients were also tested with this assay system and compared using the conventional antibody-based enzyme-linked immunosorbent assay kit. The aptamer sandwich assay demonstrated a dynamic range for TK1 at clinically relevant serum levels, covering subpicogram per milliliter concentrations. The new approach offers a simple and robust method for detecting serum biomarkers that have low and moderate abundance. The results of this study demonstrate the screening capability of the aptamer sandwich assay platform and its potential applicability to the point-of-care testing system.
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Affiliation(s)
- Mahmood Nazari
- Department of Clinical Biochemistry, Faculty of Medicine , Tarbiat Modares University , Tehran , Iran
| | | | - Abbas Sahebghadam Lotfi
- Department of Clinical Biochemistry, Faculty of Medicine , Tarbiat Modares University , Tehran , Iran
| | - Mohammad Javad Rassaee
- Department of Clinical Biochemistry, Faculty of Medicine , Tarbiat Modares University , Tehran , Iran
| | - Ramezan Ali Taheri
- Nanobiotechnology Research Center , Baqiyatallah University of Medical Sciences , Tehran , Iran
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11
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Zhang Y, Wu M, Wu M, Zhu J, Zhang X. Multifunctional Carbon-Based Nanomaterials: Applications in Biomolecular Imaging and Therapy. ACS OMEGA 2018; 3:9126-9145. [PMID: 31459047 PMCID: PMC6644613 DOI: 10.1021/acsomega.8b01071] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 07/27/2018] [Indexed: 05/30/2023]
Abstract
Molecular imaging has been widely used not only as an important detection technology in the field of medical imaging for cancer diagnosis but also as a theranostic approach for cancer in recent years. Multifunctional carbon-based nanomaterials (MCBNs), characterized by unparalleled optical, electronic, and thermal properties, have attracted increasing interest and demonstrably hold the greatest promise in biomolecular imaging and therapy. As such, it should come as no surprise that MCBNs have already revealed a great deal of potential applications in biomedical areas, such as bioimaging, drug delivery, and tumor therapy. Carbon nanomaterials can be categorized as graphene, single-walled carbon nanotubes, mesoporous carbon, nanodiamonds, fullerenes, or carbon dots on the basis of their morphologies. In this article, reports of the use of MCBNs in various chemical conjugation/functionalization strategies, focusing on their applications in cancer molecular imaging and imaging-guided therapy, will be comprehensively summarized. MCBNs show the possibility to serve as optimal candidates for precise cancer biotheranostics.
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Affiliation(s)
- Yanyan Zhang
- Department
of Medical Imaging, Second Hospital of Tianjin Medical University, Tianjin 300211, P. R. China
| | - Minghao Wu
- Department
of Radiology, Tianjin Medical University
Cancer Institute and Hospital, National Clinical Research Center for
Cancer, Tianjin’s Clinical Research Center for Cancer Key Laboratory
of Cancer Prevention and Therapy, Tianjin 300060, P. R.
China
| | - Mingjie Wu
- Institut
National de la Recherche Scientifique-Énergie Matériaux
et Télécommunications, Varennes, Quebec J3X 1S2, Canada
| | - Jingyi Zhu
- School
of Pharmaceutical Science, Nanjing Tech
University, Nanjing 211816, P. R. China
| | - Xuening Zhang
- Department
of Medical Imaging, Second Hospital of Tianjin Medical University, Tianjin 300211, P. R. China
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12
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Chipaux M, van der Laan KJ, Hemelaar SR, Hasani M, Zheng T, Schirhagl R. Nanodiamonds and Their Applications in Cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1704263. [PMID: 29573338 DOI: 10.1002/smll.201704263] [Citation(s) in RCA: 105] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 01/25/2018] [Indexed: 05/21/2023]
Abstract
Diamonds owe their fame to a unique set of outstanding properties. They combine a high refractive index, hardness, great stability and inertness, and low electrical but high thermal conductivity. Diamond defects have recently attracted a lot of attention. Given this unique list of properties, it is not surprising that diamond nanoparticles are utilized for numerous applications. Due to their hardness, they are routinely used as abrasives. Their small and uniform size qualifies them as attractive carriers for drug delivery. The stable fluorescence of diamond defects allows their use as stable single photon sources or biolabels. The magnetic properties of the defects make them stable spin qubits in quantum information. This property also allows their use as a sensor for temperature, magnetic fields, electric fields, or strain. This Review focuses on applications in cells. Different diamond materials and the special requirements for the respective applications are discussed. Methods to chemically modify the surface of diamonds and the different hurdles one has to overcome when working with cells, such as entering the cells and biocompatibility, are described. Finally, the recent developments and applications in labeling, sensing, drug delivery, theranostics, antibiotics, and tissue engineering are critically discussed.
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Affiliation(s)
- Mayeul Chipaux
- University Medical Center Groningen, Groningen University, Antonius Deusinglaan 1, 9713, AW, Groningen, The Netherlands
| | - Kiran J van der Laan
- University Medical Center Groningen, Groningen University, Antonius Deusinglaan 1, 9713, AW, Groningen, The Netherlands
| | - Simon R Hemelaar
- University Medical Center Groningen, Groningen University, Antonius Deusinglaan 1, 9713, AW, Groningen, The Netherlands
| | - Masoumeh Hasani
- Department of Analytical Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan, 6517838683, Iran
| | - Tingting Zheng
- Shenzhen Key Laboratory for Drug Addiction and Medication Safety, Department of Ultrasound, Peking University Shenzhen Hospital & Biomedical Research Institute, Shenzhen-PKU-HKUST Medical Center, 518036, Shenzhen, China
| | - Romana Schirhagl
- University Medical Center Groningen, Groningen University, Antonius Deusinglaan 1, 9713, AW, Groningen, The Netherlands
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Avci-Adali M. Selection and Application of Aptamers and Intramers. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 917:241-58. [PMID: 27236559 DOI: 10.1007/978-3-319-32805-8_11] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Aptamers are auspicious nucleic acid ligands for targeting different molecules, such as small molecules, peptides, proteins, or even whole living cells. They are short single-stranded DNA or RNA oligonucleotides, which can fold into complex three-dimensional structures and bind selectively their targets. Using the combinatorial chemistry process SELEX (Systematic Evolution of Ligands by EXponential Enrichment), target specific aptamers can be selected. These aptamers have a variety of application possibilities and can be used as sensors, diagnostic, imaging or therapeutic agents, and in the field of regenerative medicine for tissue engineering.
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Affiliation(s)
- Meltem Avci-Adali
- Department of Thoracic and Cardiovascular Surgery, University Hospital Tuebingen, Calwerstr. 7/1, 72076, Tuebingen, Germany.
- RiNA GmbH, Berlin, Germany.
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Tsai H, Chang CW, Wu LX, Hsieh CC, Chiou MD, Fuh CB. Feasibility Study of Biosensors Based on Polymelamine-modified Screen-printed Carbon Electrodes. ELECTROANAL 2017. [DOI: 10.1002/elan.201700156] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hweiyan Tsai
- Department of Medical Applied Chemistry; Chung Shan Medical University; Taichung 402 Taiwan, Tel: +886 4 24730022 ext. 12135, Fax: +886 4 23248189
- Department of Medical Education; Chung Shan Medical University Hospital; Taichung 402 Taiwan
| | - Che-Wei Chang
- Department of Medical Applied Chemistry; Chung Shan Medical University; Taichung 402 Taiwan, Tel: +886 4 24730022 ext. 12135, Fax: +886 4 23248189
| | - Luo-Xian Wu
- Department of Medical Applied Chemistry; Chung Shan Medical University; Taichung 402 Taiwan, Tel: +886 4 24730022 ext. 12135, Fax: +886 4 23248189
| | - Chih-Chung Hsieh
- Department of Medical Applied Chemistry; Chung Shan Medical University; Taichung 402 Taiwan, Tel: +886 4 24730022 ext. 12135, Fax: +886 4 23248189
| | - Ming-Da Chiou
- Department of Medical Applied Chemistry; Chung Shan Medical University; Taichung 402 Taiwan, Tel: +886 4 24730022 ext. 12135, Fax: +886 4 23248189
| | - Chwan Bor Fuh
- Department of Applied Chemistry; National Chi Nan University; Natu Taiwan
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15
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Hasanzadeh M, Shadjou N. What are the reasons for low use of graphene quantum dots in immunosensing of cancer biomarkers? MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 71:1313-1326. [DOI: 10.1016/j.msec.2016.11.068] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 11/09/2016] [Accepted: 11/17/2016] [Indexed: 11/29/2022]
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16
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Li D, Chen X, Wang H, Yu Y, Liu J, Wang Y, Zhang J, Zheng M, Zhi J. Nanodiamonds as Raman probes for specifically targeted bioimaging: visualization and mechanism study of the biorecognition between nanodiamonds-EGF and EGFR. RSC Adv 2017. [DOI: 10.1039/c6ra28139g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Targeting ligand EGF induced cell morphology change and potential cell migration risks visualized with Raman mapping using NDs as probes.
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Affiliation(s)
- Dandan Li
- Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- PR China
- University of Chinese Academy of Sciences
| | - Xin Chen
- Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- PR China
- University of Chinese Academy of Sciences
| | - Hong Wang
- Department of Pharmaceutical Analysis
- School of Pharmaceutical Sciences
- Peking University
- PR China
| | - Yuan Yu
- Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- PR China
| | - Jie Liu
- Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- PR China
| | - Yu Wang
- Beijing Center for Physical and Chemical Analysis
- PR China
| | - Jinghua Zhang
- Beijing Center for Physical and Chemical Analysis
- PR China
| | - Meiling Zheng
- Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- PR China
| | - Jinfang Zhi
- Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- PR China
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Lu J, Van Stappen T, Spasic D, Delport F, Vermeire S, Gils A, Lammertyn J. Fiber optic-SPR platform for fast and sensitive infliximab detection in serum of inflammatory bowel disease patients. Biosens Bioelectron 2015; 79:173-9. [PMID: 26706938 DOI: 10.1016/j.bios.2015.11.087] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Revised: 11/24/2015] [Accepted: 11/27/2015] [Indexed: 12/16/2022]
Abstract
Infliximab (IFX) is a therapeutic monoclonal antibody used for treating patients with inflammatory bowel disease (IBD). In order to improve therapeutic outcomes it is recommended to monitor IFX trough concentrations. Although ELISA is currently widely used for this purpose, this method is not suitable for single patient testing. In this paper we describe the development of a fast bioassay for determining IFX concentration in serum using an in-house developed fiber-optic surface plasmon resonance (FO-SPR) biosensor. Studies were first conducted to optimize covalent immobilization of the IFX-specific antibody on the sensor surface as well as to select an optimal blocking buffer for restraining the non-specific binding. In order to reach clinically relevant sensitivity for detecting IFX in patients' serum, the SPR signal was amplified by employing gold nanoparticles functionalized with another set of IFX specific antibodies. Using the optimized sandwich bioassay, calibration curves were made with series of IFX concentrations spiked in buffer and 100-fold diluted serum, reaching the limit of detection of 0.3 and 2.2ng/ml, respectively. The established bioassay was finally validated using five IFX treated IBD patients samples. Results from the FO-SPR platform were compared with an in-house developed, clinically validated ELISA resulting in excellent Pearson and intraclass correlation coefficient of 0.998 and 0.983, respectively. Furthermore, the assay time of the FO-SPR platform was significantly reduced compared to ELISA, demonstrating the potential of this platform to be used as a point-of-care diagnostic tool for improving therapeutic outcomes of IBD patients.
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Affiliation(s)
- Jiadi Lu
- BIOSYST-MeBioS, KU Leuven, Leuven, Belgium
| | - Thomas Van Stappen
- Laboratory for Therapeutic and Diagnostic Antibodies, KU Leuven, Leuven, Belgium
| | | | - Filip Delport
- BIOSYST-MeBioS, KU Leuven, Leuven, Belgium; Fox Diagnostics, Leuven, Belgium
| | | | - Ann Gils
- Laboratory for Therapeutic and Diagnostic Antibodies, KU Leuven, Leuven, Belgium
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Vorobyeva M, Timoshenko V, Vorobjev P, Venyaminova A. Aptamers Against Immunologic Targets: Diagnostic and Therapeutic Prospects. Nucleic Acid Ther 2015; 26:52-65. [PMID: 26643948 DOI: 10.1089/nat.2015.0568] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The concept of in vitro selection of nucleic acid aptamers emerged 25 years ago, and since then tremendous progress has been achieved in the development of different aptamers and their applications for various bioanalytical and therapeutic purposes. Among other protein targets of aptamers, immune system proteins are of particular interest both as diagnostic markers and therapeutic targets. The present review summarizes up-to-date articles concerning the selection and design of DNA and RNA aptamers against immunologic targets such as antibodies, cytokines, and T-cell and B-cell receptors. We also discuss the prospects of employing aptamers as recognizing modules of diagnostic aptasensors, potential therapeutic candidates for the treatment of autoimmune diseases and cancer, and specific tools for functional studies of immune system proteins.
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Affiliation(s)
- Mariya Vorobyeva
- Institute of Chemical Biology and Fundamental Medicine , Siberian Division of Russian Academy of Sciences, Novosibirsk, Russia
| | - Valentina Timoshenko
- Institute of Chemical Biology and Fundamental Medicine , Siberian Division of Russian Academy of Sciences, Novosibirsk, Russia
| | - Pavel Vorobjev
- Institute of Chemical Biology and Fundamental Medicine , Siberian Division of Russian Academy of Sciences, Novosibirsk, Russia
| | - Alya Venyaminova
- Institute of Chemical Biology and Fundamental Medicine , Siberian Division of Russian Academy of Sciences, Novosibirsk, Russia
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19
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Adhikari M, Strych U, Kim J, Goux H, Dhamane S, Poongavanam MV, Hagström AEV, Kourentzi K, Conrad JC, Willson RC. Aptamer-Phage Reporters for Ultrasensitive Lateral Flow Assays. Anal Chem 2015; 87:11660-5. [PMID: 26456715 DOI: 10.1021/acs.analchem.5b00702] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
We introduce the modification of bacteriophage particles with aptamers for use as bioanalytical reporters, and demonstrate the use of these particles in ultrasensitive lateral flow assays. M13 phage displaying an in vivo biotinylatable peptide (AviTag) genetically fused to the phage tail protein pIII were used as reporter particle scaffolds, with biotinylated aptamers attached via avidin-biotin linkages, and horseradish peroxidase (HRP) reporter enzymes covalently attached to the pVIII coat protein. These modified viral nanoparticles were used in immunochromatographic sandwich assays for the direct detection of IgE and of the penicillin-binding protein from Staphylococcus aureus (PBP2a). We also developed an additional lateral flow assay for IgE, in which the analyte is sandwiched between immobilized anti-IgE antibodies and aptamer-bearing reporter phage modified with HRP. The limit of detection of this LFA was 0.13 ng/mL IgE, ∼100 times lower than those of previously reported IgE assays.
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Affiliation(s)
- Meena Adhikari
- Department of Biology & Biochemistry, University of Houston , Houston, Texas 77004, United States
| | - Ulrich Strych
- Department of Biology & Biochemistry, University of Houston , Houston, Texas 77004, United States
| | - Jinsu Kim
- Department of Chemical & Biomolecular Engineering, University of Houston , Houston, Texas 77204, United States
| | - Heather Goux
- Department of Biology & Biochemistry, University of Houston , Houston, Texas 77004, United States
| | - Sagar Dhamane
- Department of Biology & Biochemistry, University of Houston , Houston, Texas 77004, United States
| | | | - Anna E V Hagström
- Department of Chemical & Biomolecular Engineering, University of Houston , Houston, Texas 77204, United States
| | - Katerina Kourentzi
- Department of Chemical & Biomolecular Engineering, University of Houston , Houston, Texas 77204, United States
| | - Jacinta C Conrad
- Department of Chemical & Biomolecular Engineering, University of Houston , Houston, Texas 77204, United States
| | - Richard C Willson
- Department of Biology & Biochemistry, University of Houston , Houston, Texas 77004, United States.,Department of Chemical & Biomolecular Engineering, University of Houston , Houston, Texas 77204, United States.,Centro de Biotecnología FEMSA, Tecnológico de Monterrey , Monterrey, Nuevo León, Mexico
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20
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Nagl A, Hemelaar SR, Schirhagl R. Improving surface and defect center chemistry of fluorescent nanodiamonds for imaging purposes--a review. Anal Bioanal Chem 2015; 407:7521-36. [PMID: 26220715 PMCID: PMC4575388 DOI: 10.1007/s00216-015-8849-1] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 06/05/2015] [Accepted: 06/10/2015] [Indexed: 01/06/2023]
Abstract
Diamonds are widely used for jewelry owing to their superior optical properties accounting for their fascinating beauty. Beyond the sparkle, diamond is highly investigated in materials science for its remarkable properties. Recently, fluorescent defects in diamond, particularly the negatively charged nitrogen-vacancy (NV(-)) center, have gained much attention: The NV(-) center emits stable, nonbleaching fluorescence, and thus could be utilized in biolabeling, as a light source, or as a Förster resonance energy transfer donor. Even more remarkable are its spin properties: with the fluorescence intensity of the NV(-) center reacting to the presence of small magnetic fields, it can be utilized as a sensor for magnetic fields as small as the field of a single electron spin. However, a reproducible defect and surface and defect chemistry are crucial to all applications. In this article we review methods for using nanodiamonds for different imaging purposes. The article covers (1) dispersion of particles, (2) surface cleaning, (3) particle size selection and reduction, (4) defect properties, and (5) functionalization and attachment to nanostructures, e.g., scanning probe microscopy tips.
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Affiliation(s)
- Andreas Nagl
- University Medical Center Groningen, Groningen University, Antonius Deusinglaan 1, 9713 AW, Groningen, The Netherlands
| | - Simon Robert Hemelaar
- University Medical Center Groningen, Groningen University, Antonius Deusinglaan 1, 9713 AW, Groningen, The Netherlands
| | - Romana Schirhagl
- University Medical Center Groningen, Groningen University, Antonius Deusinglaan 1, 9713 AW, Groningen, The Netherlands.
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21
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Poongavanam MV, Kisley L, Kourentzi K, Landes CF, Willson RC. Ensemble and single-molecule biophysical characterization of D17.4 DNA aptamer-IgE interactions. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2015; 1864:154-64. [PMID: 26307469 DOI: 10.1016/j.bbapap.2015.08.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Revised: 08/09/2015] [Accepted: 08/18/2015] [Indexed: 12/12/2022]
Abstract
BACKGROUND The IgE-binding DNA aptamer 17.4 is known to inhibit the interaction of IgE with the high-affinity IgE Fc receptor FcεRI. While this and other aptamers have been widely used and studied, there has been relatively little investigation of the kinetics and energetics of their interactions with their targets, by either single-molecule or ensemble methods. METHODS The dissociation kinetics of the D17.4/IgE complex and the effects of temperature and ionic strength were studied using fluorescence anisotropy and single-molecule spectroscopy, and activation parameters calculated. RESULTS The dissociation of D17.4/IgE complex showed a strong dependence on temperature and salt concentration. The koff of D17.4/IgE complex was calculated to be (2.92±0.18)×10(-3) s(-1) at 50 mM NaCl, and (1.44±0.02)×10(-2) s(-1) at 300 mM NaCl, both in 1 mM MgCl2 and 25°C. The dissociation activation energy for the D17.4/IgE complex, Ea, was 16.0±1.9 kcal mol(-1) at 50 mM NaCl and 1 mM MgCl2. Interestingly, we found that the C19A mutant of D17.4 with stabilized stem structure showed slower dissociation kinetics compared to D17.4. Single-molecule observations of surface-immobilized D17.4/IgE showed much faster dissociation kinetics, and heterogeneity not observable by ensemble techniques. CONCLUSIONS The increasing koff value with increasing salt concentration is attributed to the electrostatic interactions between D17.4/IgE. We found that both the changes in activation enthalpy and activation entropy are insignificant with increasing NaCl concentration. The slower dissociation of the mutant C19A/IgE complex is likely due to the enhanced stability of the aptamer. GENERAL SIGNIFICANCE The activation parameters obtained by applying transition state analysis to kinetic data can provide details on mechanisms of molecular recognition and have applications in drug design. Single-molecule dissociation kinetics showed greater kinetic complexity than was observed in the ensemble in-solution systems, potentially reflecting conformational heterogeneity of the aptamer. This article is part of a Special Issue entitled: Physiological Enzymology and Protein Functions.
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Affiliation(s)
| | - Lydia Kisley
- Department of Chemistry, Rice University, Houston, TX77005-1827, USA
| | - Katerina Kourentzi
- Department of Chemical and Biomolecular Engineering, University of Houston, TX 77204-4004, USA
| | - Christy F Landes
- Department of Chemistry, Rice University, Houston, TX77005-1827, USA; Department of Electrical and Computer Engineering, Rice University, Houston, TX 77005-1827, USA.
| | - Richard C Willson
- Department of Biology and Biochemistry, University of Houston, TX 77204-5001, USA; Department of Chemical and Biomolecular Engineering, University of Houston, TX 77204-4004, USA; Houston Methodist Research Institute, Houston, TX 77030, USA; Centro de Biotecnología FEMSA, Departamento de Biotecnología e Ingeniería de Alimentos, Tecnológico de Monterrey, Monterrey 64849, Mexico.
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22
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Chang CC, Chen CY, Zhao X, Wu TH, Wei SC, Lin CW. Label-free colorimetric aptasensor for IgE using DNA pseudoknot probe. Analyst 2015; 139:3347-51. [PMID: 24821053 DOI: 10.1039/c4an00253a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The development of simple and low-cost approaches to the detection of immunoglobulin E (IgE) would provide a method for the early diagnosis and prevention of atopic diseases. The current methods of detection are generally tedious, multi-step processes and are limited by the high cost of the labeled proteins. We describe here a label-free structure-switching colorimetric method for the simple measurement of IgE using DNA pseudoknot probes and gold nanoparticles. In the absence of a target the IgE aptamer probe adopts a pseudoknot conformation that dissociates a capture probe from the unmodified gold nanoparticles. However, when IgE binds to the aptamer probe, the pseudoknot is resolved, leading to a favorable hybridization between the 3' terminal loop of the aptamer probe and the capture probe; this induces the aggregation of the gold nanoparticles. As a result, the colorimetric IgE sensor using this structure-switching mechanism is sensitive, specific and convenient, and the assay works even when challenged with complicated biological matrixes such as vaginal fluids. The proposed method is expected to be of great clinical value for IgE detection and could be used, after appropriate design, for sensing applications of other structured aptamers.
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Affiliation(s)
- Chia-Chen Chang
- Institute of Biomedical Engineering, National Taiwan University, Taipei 106, Taiwan, ROC.
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23
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Cao J, Wang H, Liu Y. Petal-like CdS nanospheres-based electrochemiluminescence aptasensor for detection of IgE with gold nanoparticles amplification. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 151:274-279. [PMID: 26143318 DOI: 10.1016/j.saa.2015.06.104] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2015] [Revised: 06/02/2015] [Accepted: 06/25/2015] [Indexed: 06/04/2023]
Abstract
A facile label-free electrochemiluminescence (ECL) aptasensor was designed for sensitive detection of human immunoglobulin E (IgE) using petal-like CdS nanospheres and Au nanoparticles (AuNPs) as sensing platform. To construct the aptasensor, petal-like CdS nanospheres as ECL emitter were firstly synthesized and immobilized on the chitosan-coated glassy carbon electrode (GCE) surface. Chitosan was coated on the CdS/CS/GCE again with two coating numbers to produce a stable ECL signal and facilitate subsequent AuNPs immobilization. The construction of aptasensor was achieved after IgE aptamer was adsorbed onto the AuNPs. The detection of IgE was performed upon the incubation of the interface with target protein IgE. Under the optimum conditions, the ECL signal decreased depending linearly on the logarithmic value of IgE concentration ranging from 5.0×10(-13) to 1.0×10(-9)M with a regression equation of I=-15254.8-2129.3 logc (R(2)=0.996). The detection limit was experimentally found to be 8.0×10(-14)M. The applicability of the constructed aptasensor was demonstrated in the determination of IgE in human serum samples.
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Affiliation(s)
- Juntao Cao
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China; State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Hui Wang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Yanming Liu
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China.
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Peeters M, van Grinsven B, Cleij TJ, Jiménez-Monroy KL, Cornelis P, Pérez-Ruiz E, Wackers G, Thoelen R, De Ceuninck W, Lammertyn J, Wagner P. Label-free Protein Detection Based on the Heat-Transfer Method--A Case Study with the Peanut Allergen Ara h 1 and Aptamer-Based Synthetic Receptors. ACS APPLIED MATERIALS & INTERFACES 2015; 7:10316-10323. [PMID: 25916249 DOI: 10.1021/acsami.5b00994] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Aptamers are an emerging class of molecules that, because of the development of the systematic evolution of ligands by exponential enrichment (SELEX) process, can recognize virtually every target ranging from ions, to proteins, and even whole cells. Although there are many techniques capable of detecting template molecules with aptamer-based systems with high specificity and selectivity, they lack the possibility of integrating them into a compact and portable biosensor setup. Therefore, we will present the heat-transfer method (HTM) as an interesting alternative because this offers detection in a fast and low-cost manner and has the possibility of performing experiments with a fully integrated device. This concept has been demonstrated for a variety of applications including DNA mutation analysis and screening of cancer cells. To the best our knowledge, this is the first report on HTM-based detection of proteins, in this case specifically with aptamer-type receptors. For proof-of-principle purposes, measurements will be performed with the peanut allergen Ara h 1 and results indicate detection limits in the lower nanomolar regime in buffer liquid. As a first proof-of-application, spiked Ara h 1 solutions will be studied in a food matrix of dissolved peanut butter. Reference experiments with the quartz-crystal microbalance will allow for an estimate of the areal density of aptamer molecules on the sensor-chip surface.
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Affiliation(s)
- Marloes Peeters
- †Institute for Materials Research, Hasselt University, Wetenschapspark 1, 3590 Diepenbeek, Belgium
- ‡School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom
| | - Bart van Grinsven
- §Maastricht Science Programme, Maastricht University, 6200 MD Maastricht, The Netherlands
| | - Thomas J Cleij
- §Maastricht Science Programme, Maastricht University, 6200 MD Maastricht, The Netherlands
| | | | - Peter Cornelis
- ∥Department of Physics and Astronomy, Soft-Matter and Biophysics Section, Catholic University Leuven, Celestijnenlaan 200 D, 3001 Leuven, Belgium
| | - Elena Pérez-Ruiz
- #BIOSYST-MeBioS, KU Leuven-University of Leuven, Willem de Crooylan 42, 3000 Leuven, Belgium
| | - Gideon Wackers
- †Institute for Materials Research, Hasselt University, Wetenschapspark 1, 3590 Diepenbeek, Belgium
- ∥Department of Physics and Astronomy, Soft-Matter and Biophysics Section, Catholic University Leuven, Celestijnenlaan 200 D, 3001 Leuven, Belgium
| | - Ronald Thoelen
- †Institute for Materials Research, Hasselt University, Wetenschapspark 1, 3590 Diepenbeek, Belgium
- ⊥Division IMOMEC, IMEC v.z.w. , Wetenschapspark 1, 3590 Diepenbeek, Belgium
| | - Ward De Ceuninck
- †Institute for Materials Research, Hasselt University, Wetenschapspark 1, 3590 Diepenbeek, Belgium
- ⊥Division IMOMEC, IMEC v.z.w. , Wetenschapspark 1, 3590 Diepenbeek, Belgium
| | - Jeroen Lammertyn
- #BIOSYST-MeBioS, KU Leuven-University of Leuven, Willem de Crooylan 42, 3000 Leuven, Belgium
| | - Patrick Wagner
- †Institute for Materials Research, Hasselt University, Wetenschapspark 1, 3590 Diepenbeek, Belgium
- ∥Department of Physics and Astronomy, Soft-Matter and Biophysics Section, Catholic University Leuven, Celestijnenlaan 200 D, 3001 Leuven, Belgium
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A simple and label-free aptasensor based on nickel hexacyanoferrate nanoparticles as signal probe for highly sensitive detection of 17β-estradiol. Biosens Bioelectron 2015; 68:303-309. [PMID: 25596558 DOI: 10.1016/j.bios.2015.01.015] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 12/17/2014] [Accepted: 01/07/2015] [Indexed: 02/07/2023]
Abstract
A simple and label-free electrochemical aptasensor was developed for detecting 17β-estradiol (E2). To translate the binding events between aptamer and E2 into the measurable electrochemical signal, the nickel hexacyanoferrate nanoparticles (NiHCF NPs) as signal probe was in situ introduced on the electrode by a simple two-step deposition method, exhibiting well-defined peaks with good stability and reproducibility. Subsequently, Au nanoparticles (Au NPs) was covered on the NiHCF NPs, which not only provided a platform for immobilizing the aptamer by S-Au interaction, but further enhanced the conductivity and stability of the signal probe. With the addition of E2, the formation of E2-aptamer complexes on the sensing interface retarded the interfacial electron transfer reaction of the probe, resulting in the decrease of the electrochemical signal. E2 could be readily examined by measuring the signal change. A linear range of 1×10(-12)-6×10(-10) M was obtained with a low detection limit of 0.8×10(-12) M. The aptasensor also exhibited high specificity to E2 in control experiments employing seven endocrine disrupting compounds as the interferents that had similar structure or coexisted with E2 in the environment. Besides, the applicability of the aptasensor was successfully evaluated by determining E2 in the real samples.
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26
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Bahadır EB, Sezgintürk MK. A review on impedimetric biosensors. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2014; 44:248-62. [DOI: 10.3109/21691401.2014.942456] [Citation(s) in RCA: 143] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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27
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Polonschii C, David S, Gáspár S, Gheorghiu M, Rosu-Hamzescu M, Gheorghiu E. Complementarity of EIS and SPR to reveal specific and nonspecific binding when interrogating a model bioaffinity sensor; perspective offered by plasmonic based EIS. Anal Chem 2014; 86:8553-62. [PMID: 25126676 DOI: 10.1021/ac501348n] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The present work compares the responses of a model bioaffinity sensor based on a dielectric functionalization layer, in terms of specific and nonspecific binding, when interrogated simultaneously by Surface Plasmon Resonance (SPR), non-Faradaic Electrochemical Impedance Spectroscopy (EIS), and Plasmonic based-EIS (P-EIS). While biorecognition events triggered a sensitive SPR signal, the related EIS response was rather negligible. Contrarily, even a limited nonspecific adsorption onto the surface of the metallic electrode, allowed by the intrinsic imperfect compactness of the functionalization layers, was signaled by EIS and not by SPR. The source of this finding has been addressed from both theoretical and experimental perspectives, demonstrating that EIS signals are mainly sensitive to adsorptions that alter the current pathway through defects of the functionalization layer exposing the electrode. These observations are of importance for those developing biosensors analyzed by SPR, EIS, or the novel combination of the two methods (P-EIS). A possible application of the observed complementarity of the two methods, namely assessment of sample purity in respect to a target analyte is highlighted. Moreover, the possibility of false-positive EIS responses (determined by nonspecific binding) when assessing samples containing complex matrices or consisting of small molecular weight analytes is emphasized.
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Affiliation(s)
- Cristina Polonschii
- International Centre of Biodynamics , 1B Intrarea Portocalelor, 060101 Bucharest, Romania
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28
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Ke H, Liu M, Zhuang L, Li Z, Fan L, Zhao G. A Fetomolar Level 17β-estradiol Electrochemical Aptasensor Constructed On Hierachical Dendritic Gold Modified Boron-Doped Diamond Electrode. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.06.014] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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29
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Gaillard C, Girard HA, Falck C, Paget V, Simic V, Ugolin N, Bergonzo P, Chevillard S, Arnault JC. Peptide nucleic acid–nanodiamonds: covalent and stable conjugates for DNA targeting. RSC Adv 2014. [DOI: 10.1039/c3ra45158e] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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30
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Kashefi-Kheyrabadi L, Mehrgardi MA. Aptamer-based electrochemical biosensor for detection of adenosine triphosphate using a nanoporous gold platform. Bioelectrochemistry 2013; 94:47-52. [PMID: 23803470 DOI: 10.1016/j.bioelechem.2013.05.005] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2013] [Revised: 05/26/2013] [Accepted: 05/29/2013] [Indexed: 10/26/2022]
Abstract
In spite of the promising applications of aptamers in the bioassays, the development of aptamer-based electrochemical biosensors with the improved limit of detection has remained a great challenge. A strategy for the amplification of signal, based on application of nanostructures as platforms for the construction of an electrochemical adenosine triphosphate (ATP) aptasensor, is introduced in the present manuscript. A sandwich assay is designed by immobilizing a fragment of aptamer on a nanoporous gold electrode (NPGE) and its association to second fragment in the presence of ATP. Consequently, 3, 4-diaminobenzoic acid (DABA), as a molecular reporter, is covalently attached to the amine-label of the second fragment, and the direct oxidation signal of DABA is followed as the analytical signal. The sensor can detect the concentrations of ATP as low as submicromolar scales. Furthermore, 3.2% decrease in signal is observed by keeping the aptasensor at 4 °C for a week in buffer solution, implying a desirable stability. Moreover, analog nucleotides, including GTP, UTP and CTP, do not show serious interferences and this sensor easily detects its target in deproteinized human blood plasma.
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31
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Wang Y, Ye Z, Ying Y. Detection of immunoglobulin E using an aptamer based dot-blot assay. ACTA ACUST UNITED AC 2013. [DOI: 10.1007/s11434-013-5702-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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32
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Šmuc T, Ahn IY, Ulrich H. Nucleic acid aptamers as high affinity ligands in biotechnology and biosensorics. J Pharm Biomed Anal 2013; 81-82:210-7. [PMID: 23666257 DOI: 10.1016/j.jpba.2013.03.014] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Revised: 03/11/2013] [Accepted: 03/20/2013] [Indexed: 02/07/2023]
Abstract
Aptamers are small nucleic acid molecules capable of binding to a wide range of target molecules with high affinity and specificity. They have been developed and widely used not only as research tools, but also as biosensors, specific antagonists, and diagnostic markers and as protein purification platform for many pharmaceutical and clinical applications. Here, in this paper we will explore biochemical aspects of aptamer-target interactions and show why aptamers rival antibodies in target recognition and purification procedures. This review will focus on strategies of using aptamers as affinity ligands for molecules of therapeutic and pharmaceutical interest including applications in chromatography and capillary electrophoresis for protein and small molecule purification. Moreover, we will also discuss aptamers whose binding parameters can be controlled on demand for diagnostic approaches and used as sensitive receptors in biosensorics. Aptamers have opened up exciting fields in basic and applied research of pharmaceutical and biotechnological interest.
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Affiliation(s)
- Tina Šmuc
- Laboratory for Bio-instrumentation, Centre of Excellence for Biosensors, Instrumentation and Process Control, Velika pot 22, 5250 Solkan, Slovenia
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33
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Janssen KPF, Knez K, Spasic D, Lammertyn J. Nucleic acids for ultra-sensitive protein detection. SENSORS (BASEL, SWITZERLAND) 2013; 13:1353-84. [PMID: 23337338 PMCID: PMC3574740 DOI: 10.3390/s130101353] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Revised: 12/26/2012] [Accepted: 12/28/2012] [Indexed: 12/13/2022]
Abstract
Major advancements in molecular biology and clinical diagnostics cannot be brought about strictly through the use of genomics based methods. Improved methods for protein detection and proteomic screening are an absolute necessity to complement to wealth of information offered by novel, high-throughput sequencing technologies. Only then will it be possible to advance insights into clinical processes and to characterize the importance of specific protein biomarkers for disease detection or the realization of "personalized medicine". Currently however, large-scale proteomic information is still not as easily obtained as its genomic counterpart, mainly because traditional antibody-based technologies struggle to meet the stringent sensitivity and throughput requirements that are required whereas mass-spectrometry based methods might be burdened by significant costs involved. However, recent years have seen the development of new biodetection strategies linking nucleic acids with existing antibody technology or replacing antibodies with oligonucleotide recognition elements altogether. These advancements have unlocked many new strategies to lower detection limits and dramatically increase throughput of protein detection assays. In this review, an overview of these new strategies will be given.
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Affiliation(s)
- Kris P. F. Janssen
- MeBioS Biosensor Group, Faculteit Bio-Ingenieurswetenschappen, KU Leuven, Willem De Croylaan, Leuven, Belgium; E-Mails: (K.P.F.J.); (K.K.); (D.S.)
| | - Karel Knez
- MeBioS Biosensor Group, Faculteit Bio-Ingenieurswetenschappen, KU Leuven, Willem De Croylaan, Leuven, Belgium; E-Mails: (K.P.F.J.); (K.K.); (D.S.)
| | - Dragana Spasic
- MeBioS Biosensor Group, Faculteit Bio-Ingenieurswetenschappen, KU Leuven, Willem De Croylaan, Leuven, Belgium; E-Mails: (K.P.F.J.); (K.K.); (D.S.)
| | - Jeroen Lammertyn
- MeBioS Biosensor Group, Faculteit Bio-Ingenieurswetenschappen, KU Leuven, Willem De Croylaan, Leuven, Belgium; E-Mails: (K.P.F.J.); (K.K.); (D.S.)
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Tran DT, Knez K, Janssen KP, Pollet J, Spasic D, Lammertyn J. Selection of aptamers against Ara h 1 protein for FO-SPR biosensing of peanut allergens in food matrices. Biosens Bioelectron 2012; 43:245-51. [PMID: 23318547 DOI: 10.1016/j.bios.2012.12.022] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Revised: 11/21/2012] [Accepted: 12/04/2012] [Indexed: 11/26/2022]
Abstract
The rising prevalence to food allergies in the past two decades, together with the fact that the only existing therapy is avoidance of allergen-containing food next to the implementation of anti-allergic drugs, urges the need for improved performance of current assays to detect potential allergens in food products. Therein, the focus has been on aptamer-based biosensors in recent years. In this paper we report for the first time the selection of aptamers against one of the most important peanut allergens, Ara h 1. Several Ara h1 DNA aptamers were selected after eight selection rounds using capillary electrophoresis (CE)-SELEX. The selected aptamers specifically recognized Ara h 1 and did not significantly bind with other proteins, including another peanut allergen Ara h 2. The dissociation constant of a best performing aptamer was in the nanomolar range as determined independently by three different approaches, which are surface plasmon resonance, fluorescence anisotropy, and capillary electrophoresis (353 ± 82 nM, 419 ± 63 nM, and 450 ± 60 nM, respectively). Furthermore, the selected aptamer was used for bioassay development on a home-built fiber optic surface plasmon resonance (FO-SPR) biosensor platform for detecting Ara h 1 protein in both buffer and food matrix samples demonstrating its real potential for the development of novel, more accurate aptamer-based biosensors. In conclusion, the reported aptamer holds a great potential for the detection of Ara h 1 in both the medical field and the food sector due to its high affinity and specificity for the target protein.
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Affiliation(s)
- Dinh T Tran
- BIOSYST-MeBioS, KU Leuven-University of Leuven, Willem de Croylaan 42, B-3001 Leuven, Belgium.
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A highly selective electrochemical impedance spectroscopy-based aptasensor for sensitive detection of acetamiprid. Biosens Bioelectron 2012; 43:12-8. [PMID: 23274191 DOI: 10.1016/j.bios.2012.11.033] [Citation(s) in RCA: 133] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Revised: 11/20/2012] [Accepted: 11/27/2012] [Indexed: 11/20/2022]
Abstract
A simple aptasensor for sensitive and selective detection of acetamiprid has been developed based on electrochemical impedance spectroscopy (EIS). To improve sensitivity of the aptasensor, gold nanoparticles (AuNPs) were electrodeposited on the bare gold electrode surface by cycle voltammetry (CV), which was employed as a platform for aptamer immobilization. With the addition of acetamiprid, the formation of acetamiprid-aptamer complex on the AuNPs-deposited electrode surface resulted in an increase of electron transfer resistance (Ret). The change of Ret strongly depends on acetamiprid concentration, which is applied for acetamiprid quantification. A wide linear range was obtained from 5 to 600nM with a low detection limit of 1nM. The control experiments performed by employing the pesticides that may coexist or have similar structure with acetamiprid demonstrate that the aptasensor has only specific recognition to acetamiprid, resulting in high selectivity of the aptasensor. The dissociation constant, Kd of 23.41nM for acetamiprid-aptamer complex has been determined from the differential capacitance (Cd) by assuming a Langmuir isotherm, which indicates strong interaction between acetamiprid and aptamer, further proving high selectivity of the aptasensor. Besides, the applicability of the developed aptasensor has been successfully evaluated by determining acetamiprid in the real samples, wastewater and tomatoes.
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36
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Lee CY, Wu KY, Su HL, Hung HY, Hsieh YZ. Sensitive label-free electrochemical analysis of human IgE using an aptasensor with cDNA amplification. Biosens Bioelectron 2012; 39:133-8. [PMID: 22883750 DOI: 10.1016/j.bios.2012.07.009] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2012] [Revised: 07/06/2012] [Accepted: 07/07/2012] [Indexed: 11/19/2022]
Abstract
In this study, we developed an ultrasensitive label-free aptamer-based electrochemical biosensor, featuring a highly specific anti-human immunoglobulin E (IgE) aptamer as a capture probe, for human IgE detection. Construction of the aptasensor began with the electrodeposition of gold nanoparticles (AuNPs) onto a graphite-based screen-printed electrode (SPE). After immobilizing the thiol-capped anti-human IgE aptamer onto the AuNPs through self-assembly, we treated the electrode with mercaptohexanol (MCH) to ensure that the remaining unoccupied surfaces of the AuNPs would not undergo nonspecific binding. We employed a designed complementary DNA featuring a guanine-rich section in its sequence (cDNA G1) as a detection probe to bind with the unbound anti-human IgE aptamer. We measured the redox current of methylene blue (MB) to determine the concentration of human IgE in the sample. When the aptamer captured human IgE, the binding of cDNA G1 to the aptamer was inhibited. Using cDNA G1 in the assay greatly amplified the redox signal of MB bound to the detection probe. Accordingly, this approach allowed the linear range (coefficient of determination: 0.996) for the analysis of human IgE to extend from 1 to 100,000pM; the limit of detection was 0.16pM. The fabricated aptasensor exhibited good selectivity toward human IgE even when human IgG, thrombin, and human serum albumin were present at 100-fold concentrations. This method should be readily applicable to the detection of other analytes, merely by replacing the anti-human IgE aptamer/cDNA G1 pair with a suitable anti-target molecule aptamer and cDNA.
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Affiliation(s)
- Cheng-Yu Lee
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan, ROC
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37
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An optimised electrochemical biosensor for the label-free detection of C-reactive protein in blood. Biosens Bioelectron 2012; 39:94-8. [PMID: 22809521 DOI: 10.1016/j.bios.2012.06.051] [Citation(s) in RCA: 168] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2012] [Revised: 06/08/2012] [Accepted: 06/25/2012] [Indexed: 12/11/2022]
Abstract
C-reactive protein (CRP) is an acute phase protein whose levels are increased in many disorders. There exists, in particular, a great deal of interest in the correlation between blood serum levels and the severity of risk for cardiovascular disease. A sensitive, label-free, non-amplified and reusable electrochemical impedimetric biosensor for the detection of CRP in blood serum was developed herein based on controlled and coverage optimised antibody immobilization on standard polycrystalline gold electrodes. Charge transfer resistance changes were highly target specific, linear with log CRP concentration across a 0.5-50nM range and associated with a limit of detection of 176pM. Significantly, the detection limits are better than those of current CRP clinical methods and the assays are potentially cheap, relatively automated, reusable, multiplexed and highly portable. The generated interfaces were capable not only of comfortably quantifying CRP across a clinically relevant range of concentrations but also of doing this in whole blood serum with interfaces that were, subsequently, reusable. The importance of optimising receptor layer resistance in maximising assay sensitivity is also detailed.
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38
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Lien ZY, Hsu TC, Liu KK, Liao WS, Hwang KC, Chao JI. Cancer cell labeling and tracking using fluorescent and magnetic nanodiamond. Biomaterials 2012; 33:6172-85. [PMID: 22672836 DOI: 10.1016/j.biomaterials.2012.05.009] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2012] [Accepted: 05/05/2012] [Indexed: 11/18/2022]
Abstract
Nanodiamond, a promising carbon nanomaterial, develops for biomedical applications such as cancer cell labeling and detection. Here, we establish the nanodiamond-bearing cancer cell lines using the fluorescent and magnetic nanodiamond (FMND). Treatment with FMND particles did not significantly induce cytotoxicity and growth inhibition in HFL-1 normal lung fibroblasts and A549 lung cancer cells. The fluorescence intensities and particle complexities were increased in a time- and concentration-dependent manner by treatment with FMND particles in lung cancer cells; however, the existence of FMND particles inside the cells did not alter cellular size distribution. The FMND-bearing lung cancer cells could be separated by the fluorescent and magnetic properties of FMNDs using the flow cytometer and magnetic device, respectively. The FMND-bearing cancer cells were identified by the existence of FMNDs using flow cytometer and confocal microscope analysis. More importantly, the cell morphology, viability, growth ability and total protein expression profiles in the FMND-bearing cells were similar to those of the parental cells. The separated FMND-bearing cells with various generations were cryopreservation for further applications. After re-thawing the FMND-bearing cancer cell lines, the cells still retained the cell survival and growth ability. Additionally, a variety of human cancer types including colon (RKO), breast (MCF-7), cervical (HeLa), and bladder (BFTC905) cancer cells could be used the same strategy to prepare the FMND-bearing cancer cells. These results show that the FMND-bearing cancer cell lines, which reserve the parental cell functions, can be applied for specific cancer cell labeling and tracking.
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Affiliation(s)
- Zhi-Yi Lien
- Institute of Molecular Medicine and Bioengineering, National Chiao Tung University, Hsinchu 30068, Taiwan
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39
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Nam EJ, Kim EJ, Wark AW, Rho S, Kim H, Lee HJ. Highly sensitive electrochemical detection of proteins using aptamer-coated gold nanoparticles and surface enzyme reactions. Analyst 2012; 137:2011-6. [PMID: 22302221 DOI: 10.1039/c2an15994e] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel electrochemical detection methodology is described for the femtomolar detection of proteins which utilizes both DNA aptamer-functionalized nanoparticles and a surface enzymatic reaction. Immunoglobulin E (IgE) was used as a model protein biomarker, which possesses two distinct epitopes for antibody (anti-IgE) and DNA aptamer binding. A surface sandwich assay format was utilized involving the specific adsorption of IgE onto a gold electrode surface that was pre-modified with a monolayer of aptamer-nanoparticle conjugates followed by the specific interaction of alkaline phosphatase (ALP) conjugated anti-IgE. To clearly demonstrate the signal enhancement associated with nanoparticle use, anodic current measurements of the ALP catalyzed oxidation of the enzyme substrate 4-aminophenylphosphate (APP) were also compared with electrode surfaces upon which the aptamer was directly attached. The detection of an unlabelled protein at concentrations as low as 5 fM is a significant improvement compared to conventional electrochemical-based immunoassay approaches and provides a foundation for the practical use and incorporation of nanoparticle-enhanced detection into electrochemical biosensing technologies.
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Affiliation(s)
- Eun Ji Nam
- Department of Chemistry and Green-Nano Materials Research Center, Kyungpook National University, 1370 Sankyuk-dong, Buk-gu, Daegu-city, 702-701, Republic of Korea
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40
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Hong P, Li W, Li J. Applications of aptasensors in clinical diagnostics. SENSORS 2012; 12:1181-1193. [PMID: 22438706 PMCID: PMC3304108 DOI: 10.3390/s120201181] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2011] [Revised: 01/11/2012] [Accepted: 01/29/2012] [Indexed: 12/17/2022]
Abstract
Aptamers are artificial oligonucleotides (DNA or RNA) selected in vitro that bind a broad range of targets with high affinity and specificity; a sensitive yet simple method to utilize aptamers as recognition elements for the development of biosensors (aptasensors) is to transduce the signal electrochemically. So far, aptasensors have been applied to clinical diagnostics and several technologies are in development. Aptasensors will extend the limits of current clinical diagnostics. Although the potential diagnostic applications are unlimited, the most current applications are foreseen in the areas of biomarker detection, cancer clinical testing, detection of infectious microorganisms and viruses. This review attempts to list examples of the research progresses of aptamers in biosensor platforms that have been published in recent years; in particular, we display cases of aptasensors that are already incorporated in clinical diagnostics or have potential applications in clinical diagnostics.
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Affiliation(s)
- Ping Hong
- National Center for Clinical Laboratories, Beijing Hospital, Beijing 100730, China; E-Mails: (P.H.); (W.L.)
- Graduate School, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Wenli Li
- National Center for Clinical Laboratories, Beijing Hospital, Beijing 100730, China; E-Mails: (P.H.); (W.L.)
- Graduate School, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Jinming Li
- National Center for Clinical Laboratories, Beijing Hospital, Beijing 100730, China; E-Mails: (P.H.); (W.L.)
- Graduate School, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +86-10-5811-5053
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41
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Sett A, Das S, Sharma P, Bora U. Aptasensors in Health, Environment and Food Safety Monitoring. ACTA ACUST UNITED AC 2012. [DOI: 10.4236/ojab.2012.12002] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Qin H, Liu J, Chen C, Wang J, Wang E. An electrochemical aptasensor for chiral peptide detection using layer-by-layer assembly of polyelectrolyte-methylene blue/polyelectrolyte-graphene multilayer. Anal Chim Acta 2011; 712:127-31. [PMID: 22177075 DOI: 10.1016/j.aca.2011.10.044] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2011] [Revised: 10/14/2011] [Accepted: 10/19/2011] [Indexed: 10/15/2022]
Abstract
Here we demonstrate for the first time that by physically adsorbing aptamer onto conductive film assembled via alternate adsorption of graphene/polyelectrolyte and methylene blue/polyelectrolyte, a label-free electrochemical aptasensor with high sensitivity and selectivity for peptide detection is constructed. Graphene multilayer derived from layer-by-layer assembly has played significant roles in this sensing strategy: allowing accumulation of methylene blue, facilitating electron transfer and providing much more adsorption site. As compared to previous electrochemical aptasensors, the current sensor based on graphene multilayer alternated with electroactive molecule layer offers extremely high capability for sensitive detection of target without interference of environmental surrounding. This electroactive probe-confined graphene multilayer confers great flexibility to combine with differential pulse voltammetry (DPV) together. In the presence of target d entiomer of arginine vasopressin (D-VP), the binding of peptide to aptamer block the electron transfer process of MB, leading to decreased current peak of DPV. By this way, this electrochemical aptasensor based on electroactive molecule-intercalated graphene multilayer provide highly sensitive and specific detection of D-VP with the lowest detectable concentration of 1 ng mL(-1) and a wide detection range from 1 to 265 ng mL(-1).
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Affiliation(s)
- Haixia Qin
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
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Affiliation(s)
- Anton B. Iliuk
- Department of Biochemistry and Purdue Center for Cancer Research, Purdue University, West Lafayette, IN 47907
| | - Lianghai Hu
- Department of Biochemistry and Purdue Center for Cancer Research, Purdue University, West Lafayette, IN 47907
| | - W. Andy Tao
- Department of Biochemistry and Purdue Center for Cancer Research, Purdue University, West Lafayette, IN 47907
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Radi AE. Electrochemical Aptamer-Based Biosensors: Recent Advances and Perspectives. INTERNATIONAL JOURNAL OF ELECTROCHEMISTRY 2011; 2011:1-17. [DOI: 10.4061/2011/863196] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023] Open
Abstract
This paper reviews the advancements of a wide range of electrochemical aptamer-based biosensors, electrochemical aptasensors, for target analytes monitoring. Methods for immobilizing aptamers onto an electrode surface are discussed. Aptasensors are presented according to their detection strategies. Many of these are simply electrochemical, aptamer-based equivalents of traditional immunochemical approaches, sandwich and competition assays employing electroactive signaling moieties. Others, exploiting the unusual physical properties of aptamers, are signal-on (positive readout signal) and signal-off (negative readout signal) aptasensors based on target binding-induced conformational change of aptamers. Aptamer label-free devices are also discussed.
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Affiliation(s)
- Abd-Elgawad Radi
- Department of Chemistry, Faculty of Science, Mansoura University, Dumyat 34517, Egypt
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Amiaud L, Martin I, Milosavljević AR, Michaelson S, Hoffman A, Azria R, Lafosse A. Low-energy electron scattering on deuterated nanocrystalline diamond films—a model system for understanding the interplay between density-of-states, excitation mechanisms and surface versus lattice contributions. Phys Chem Chem Phys 2011; 13:11495-502. [DOI: 10.1039/c1cp20219g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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