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Park G, Park H, Park SC, Jang M, Yoon J, Ahn JH, Lee T. Recent Developments in DNA-Nanotechnology-Powered Biosensors for Zika/Dengue Virus Molecular Diagnostics. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:361. [PMID: 36678114 PMCID: PMC9864780 DOI: 10.3390/nano13020361] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/09/2023] [Accepted: 01/11/2023] [Indexed: 06/17/2023]
Abstract
Zika virus (ZIKV) and dengue virus (DENV) are highly contagious and lethal mosquito-borne viruses. Global warming is steadily increasing the probability of ZIKV and DENV infection, and accurate diagnosis is required to control viral infections worldwide. Recently, research on biosensors for the accurate diagnosis of ZIKV and DENV has been actively conducted. Moreover, biosensor research using DNA nanotechnology is also increasing, and has many advantages compared to the existing diagnostic methods, such as polymerase chain reaction (PCR) and enzyme-linked immunosorbent assay (ELISA). As a bioreceptor, DNA can easily introduce a functional group at the 5' or 3' end, and can also be used as a folded structure, such as a DNA aptamer and DNAzyme. Instead of using ZIKV and DENV antibodies, a bioreceptor that specifically binds to viral proteins or nucleic acids has been fabricated and introduced using DNA nanotechnology. Technologies for detecting ZIKV and DENV can be broadly divided into electrochemical, electrical, and optical. In this review, advances in DNA-nanotechnology-based ZIKV and DENV detection biosensors are discussed.
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Affiliation(s)
- Goeun Park
- Department of Chemical Engineering, Kwangwoon University, Seoul 01897, Republic of Korea
| | - Hanbin Park
- Department of Chemical Engineering, Kwangwoon University, Seoul 01897, Republic of Korea
| | - Sang-Chan Park
- Department of Electronics Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Moonbong Jang
- Department of Chemical Engineering, Kwangwoon University, Seoul 01897, Republic of Korea
| | - Jinho Yoon
- Department of Biomedical-Chemical Engineering, The Catholic University of Korea, 43 Jibong-ro, Wonmi-gu, Bucheon-si 14662, Gyeonggi-do, Republic of Korea
| | - Jae-Hyuk Ahn
- Department of Electronics Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Taek Lee
- Department of Chemical Engineering, Kwangwoon University, Seoul 01897, Republic of Korea
- TL Bioindustry, 20 Kwangwoon-ro, Nowon-gu, Seoul 01897, Republic of Korea
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State of the Art in Smart Portable, Wearable, Ingestible and Implantable Devices for Health Status Monitoring and Disease Management. SENSORS 2022; 22:s22114228. [PMID: 35684847 PMCID: PMC9185336 DOI: 10.3390/s22114228] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 05/25/2022] [Accepted: 05/26/2022] [Indexed: 02/01/2023]
Abstract
Several illnesses that are chronic and acute are becoming more relevant as the world's aging population expands, and the medical sector is transforming rapidly, as a consequence of which the need for "point-of-care" (POC), identification/detection, and real time management of health issues that have been required for a long time are increasing. Biomarkers are biological markers that help to detect status of health or disease. Biosensors' applications are for screening for early detection, chronic disease treatment, health management, and well-being surveillance. Smart devices that allow continual monitoring of vital biomarkers for physiological health monitoring, medical diagnosis, and assessment are becoming increasingly widespread in a variety of applications, ranging from biomedical to healthcare systems of surveillance and monitoring. The term "smart" is used due to the ability of these devices to extract data with intelligence and in real time. Wearable, implantable, ingestible, and portable devices can all be considered smart devices; this is due to their ability of smart interpretation of data, through their smart sensors or biosensors and indicators. Wearable and portable devices have progressed more and more in the shape of various accessories, integrated clothes, and body attachments and inserts. Moreover, implantable and ingestible devices allow for the medical diagnosis and treatment of patients using tiny sensors and biomedical gadgets or devices have become available, thus increasing the quality and efficacy of medical treatments by a significant margin. This article summarizes the state of the art in portable, wearable, ingestible, and implantable devices for health status monitoring and disease management and their possible applications. It also identifies some new technologies that have the potential to contribute to the development of personalized care. Further, these devices are non-invasive in nature, providing information with accuracy and in given time, thus making these devices important for the future use of humanity.
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Qi H, Hu Z, Yang Z, Zhang J, Wu JJ, Cheng C, Wang C, Zheng L. Capacitive Aptasensor Coupled with Microfluidic Enrichment for Real-Time Detection of Trace SARS-CoV-2 Nucleocapsid Protein. Anal Chem 2022; 94:2812-2819. [PMID: 34982528 PMCID: PMC8751652 DOI: 10.1021/acs.analchem.1c04296] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Accepted: 12/21/2021] [Indexed: 12/13/2022]
Abstract
The pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has lasted for almost 2 years. Stemming its spread has posed severe challenges for clinical virus detection. A long turnaround time, complicated operation, and low accuracy have become bottlenecks in developing detection techniques. Adopting a direct antigen detection strategy, we developed a fast-responding and quantitative capacitive aptasensor for ultratrace nucleocapsid protein detection based on a low-cost microelectrode array (MEA) chip. Employing the solid-liquid interface capacitance with a sensitivity of picofarad level, the tiny change on the MEA surface can be definitively detected. As a result, the limit of detection reaches an ultralow level of femtogram per milliliter in different matrices. Integrated with efficient microfluidic enrichment, the response time of this sensor from the sample to the result is shortened to 15 s, completely meeting the real-time detection demand. Moreover, the wide linear range of the sensor is from 10-5 to 10-2 ng/mL, and a high selectivity of 6369:1 is achieved. After application and evaluation in different environmental and body fluid matrices, this sensor and the detection method have proved to be a label-free, real-time, easy-to-operate, and specific strategy for SARS-CoV-2 screening and diagnosis.
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Affiliation(s)
- Haochen Qi
- College of Electrical and Electronic Engineering,
Wenzhou University, Wenzhou 325035,
China
| | - Zhiwen Hu
- School of Computer and Information Engineering,
Zhejiang Gongshang University, Hangzhou 310018,
China
| | - Zhongliang Yang
- Department of Electronic Engineering,
Tsinghua University, Beijing 100084,
China
| | - Jian Zhang
- College of Electrical and Electronic Engineering,
Wenzhou University, Wenzhou 325035,
China
- School of Food and Biological Engineering,
Hefei University of Technology, Hefei 230009,
China
| | - Jie Jayne Wu
- Department of Electrical Engineering and Computer
Science, The University of Tennessee, Knoxville, Tennessee
37996, United States
| | - Cheng Cheng
- Department of Engineering and Technology Management,
Morehead State University, Morehead, Kentucky 40351
United States
| | - Chunchang Wang
- Laboratory of Dielectric Functional Materials, School of
Materials Physics and Engineering, Anhui University, Hefei
230601, China
| | - Lei Zheng
- School of Food and Biological Engineering,
Hefei University of Technology, Hefei 230009,
China
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Song M, Lin X, Peng Z, Zhang M, Wu J. Enhancing affinity-based electroanalytical biosensors by integrated AC electrokinetic enrichment-A mini review. Electrophoresis 2021; 43:201-211. [PMID: 34453857 DOI: 10.1002/elps.202100168] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 08/03/2021] [Accepted: 08/20/2021] [Indexed: 11/09/2022]
Abstract
Biosensors play a central role in moving diagnostics to being on-site or decentralized. Affinity biosensor, an important category of biosensors, has important applications in clinical diagnosis, pharmaceuticals, immunology, and other fields. Affinity biosensors rely on specific binding between target analytes and biological ligands such as antibodies, nucleic acids, or other receptors to generate measurable signals. Oftentimes the target analytes in practical samples are of low abundance in a complex matrix. Traditional affinity biosensors mainly rely on random diffusion of analytes in solution to conjugate with biorecognition elements on the sensor surface of electrodes. The process may take hours or even days, which is not conducive to rapid and sensitive detection of biosensors. Therefore, it is strongly desired to incorporate an enrichment mechanism for target analytes into biosensor-based detection. AC electrokinetic (ACEK) effect can realize rapid enrichment of analytes by application of AC electric fields, which holds great promise for achieving high sensitivity, low detection limit, and rapid turnaround. This article reviews the studies of affinity biosensors integrated with ACEK enrichment in the past decade, and summarizes the latest detection methods, detection devices and applications, hoping to provide some insights and references for researchers in related fields.
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Affiliation(s)
- Min Song
- Key Laboratory of Optoelectronic Technology and Systems of Ministry of Education of China, Chongqing University, Chongqing, P. R. China
| | - Xiaogang Lin
- Key Laboratory of Optoelectronic Technology and Systems of Ministry of Education of China, Chongqing University, Chongqing, P. R. China
| | - Zhijia Peng
- Key Laboratory of Optoelectronic Technology and Systems of Ministry of Education of China, Chongqing University, Chongqing, P. R. China
| | - Maoxiao Zhang
- Key Laboratory of Optoelectronic Technology and Systems of Ministry of Education of China, Chongqing University, Chongqing, P. R. China
| | - Jayne Wu
- Department of Electrical Engineering and Computer Science, The University of Tennessee, Knoxville, Tennessee, USA
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Cheng C, Wu JJ, Chen J. A Sensitive and Specific Genomic RNA Sensor for Point-of-Care Screening of Zika Virus from Serum. Anal Chem 2021; 93:11379-11387. [PMID: 34378378 DOI: 10.1021/acs.analchem.0c05415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This work presents a sensitive and specific single-step RNA sensor for Zika virus (ZIKV) in serum. Using AC electrokinetics (ACEK)-enhanced capacitive sensing technology, ZIKV genomic RNA (gRNA) can be directly detected from serum. The sensors are interdigitated electrodes modified with oligonucleotide probes complementary to the conserved regions of ZIKV gRNA. The ACEK capacitive sensing applies an optimized AC excitation signal over the sensor, which induces ACEK microfluidic enrichment of analytes and also simultaneously performs real-time monitoring of hybridization of ZIKV gRNA on the sensor surface. Hence, the sensing procedures are simple with rapid turn-around time and good specificity and sensitivity. A series of experiments are conducted to optimize the sensor performance. The performance of the sensor is investigated for three different probes, two functionalization buffers, and different hybridization buffers. With the optimized sensing protocol, this method can detect spiked ZIKV gRNA from human serum within 30 s and reach a limit of detection of 78.8 copies/μL in analytical samples and as low as 287.5 copies/μL in neat serum. The sensors can successfully differentiate between the RNAs of the ZIKV and dengue virus, two viruses with similar transmission paths and symptoms. The sensor is simple to use and requires no labeling or sophisticated process typically involved in a polymerase chain reaction, hybridization chain reaction, or nucleic acid sequence-based amplification.
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Affiliation(s)
- Cheng Cheng
- School of Engineering and Computer Science, Morehead State University, 150 University Blvd., Morehead, Kentucky 40351, United States.,Department of Electrical Engineering and Computer Science, The University of Tennessee, 1520 Middle Drive, Knoxville, Tennessee 37996, United States
| | - Jie Jayne Wu
- Department of Electrical Engineering and Computer Science, The University of Tennessee, 1520 Middle Drive, Knoxville, Tennessee 37996, United States
| | - Jiangang Chen
- Department of Public Health, The University of Tennessee, 1914 Andy Holt Avenue, Knoxville, Tennessee 37996, United States
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Rapid and Sensitive Detection of miRNA Based on AC Electrokinetic Capacitive Sensing for Point-of-Care Applications. SENSORS 2021; 21:s21123985. [PMID: 34207808 PMCID: PMC8226656 DOI: 10.3390/s21123985] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 05/25/2021] [Accepted: 06/03/2021] [Indexed: 12/13/2022]
Abstract
A sensitive and efficient method for microRNAs (miRNAs) detection is strongly desired by clinicians and, in recent years, the search for such a method has drawn much attention. There has been significant interest in using miRNA as biomarkers for multiple diseases and conditions in clinical diagnostics. Presently, most miRNA detection methods suffer from drawbacks, e.g., low sensitivity, long assay time, expensive equipment, trained personnel, or unsuitability for point-of-care. New methodologies are needed to overcome these limitations to allow rapid, sensitive, low-cost, easy-to-use, and portable methods for miRNA detection at the point of care. In this work, to overcome these shortcomings, we integrated capacitive sensing and alternating current electrokinetic effects to detect specific miRNA-16b molecules, as a model, with the limit of detection reaching 1.0 femto molar (fM) levels. The specificity of the sensor was verified by testing miRNA-25, which has the same length as miRNA-16b. The sensor we developed demonstrated significant improvements in sensitivity, response time and cost over other miRNA detection methods, and has application potential at point-of-care.
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Zhang J, Fang X, Mao Y, Qi H, Wu J, Liu X, You F, Zhao W, Chen Y, Zheng L. Real-time, selective, and low-cost detection of trace level SARS-CoV-2 spike-protein for cold-chain food quarantine. NPJ Sci Food 2021; 5:12. [PMID: 34075052 PMCID: PMC8357935 DOI: 10.1038/s41538-021-00094-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 04/06/2021] [Indexed: 02/08/2023] Open
Abstract
Due to the friendly temperature for virus survival, SARS-CoV-2 is frequently found in cold-chain foods, posing a serious threat to public health. Utilizing an interdigitated microelectrode chip modified with an antibody probe and integrating dielectrophoresis enrichment with interfacial capacitance sensing, a strategy is presented for the detection of trace level spike-protein from SARS-CoV-2. It achieves a limit of detection as low as 2.29 × 10-6 ng/mL in 20 s, with a wide linear range of 10-5-10-1 ng/mL and a selectivity of 234:1. The cost for a single test can be controlled to ~1 dollar. This strategy provides a competitive solution for real-time, sensitive, selective, and large-scale application in cold-chain food quarantine.
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Affiliation(s)
- Jian Zhang
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei, China.,School of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Xin Fang
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei, China
| | - Yu Mao
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Haochen Qi
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei, China.
| | - Jayne Wu
- Department of Electrical Engineering and Computer Science, The University of Tennessee, Knoxville, TN, USA.
| | - Xiaoru Liu
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei, China
| | - Fangshuo You
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei, China
| | - Wenci Zhao
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei, China
| | - Ying Chen
- Agro-product Safety Research Centre, Chinese Academy of Inspection and Quarantine, Beijing, China
| | - Lei Zheng
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, China.
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A Label and Probe-Free Zika Virus Immunosensor Prussian Blue@carbon Nanotube-Based for Amperometric Detection of the NS2B Protein. BIOSENSORS-BASEL 2021; 11:bios11050157. [PMID: 34065688 PMCID: PMC8156682 DOI: 10.3390/bios11050157] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 05/02/2021] [Accepted: 05/10/2021] [Indexed: 12/14/2022]
Abstract
Zika virus (ZIKV) is a mosquito-borne infection, predominant in tropical and subtropical regions causing international concern due to the ZIKV disease having been associated with congenital disabilities, especially microcephaly and other congenital abnormalities in the fetus and newborns. Development of strategies that minimize the devastating impact by monitoring and preventing ZIKV transmission through sexual intercourse, especially in pregnant women, since no vaccine is yet available for the prevention or treatment, is critically important. ZIKV infection is generally asymptomatic and cross-reactivity with dengue virus (DENV) is a global concern. An innovative screen-printed electrode (SPE) was developed for amperometric detection of the non-structural protein (NS2B) of ZIKV by exploring the intrinsic redox catalytic activity of Prussian blue (PB), incorporated into a carbon nanotube–polypyrrole composite. Thus, this immunosensor has the advantage of electrochemical detection without adding any redox-probe solution (probe-less detection), allowing a point-of-care diagnosis. It was responsive to serum samples of only ZIKV positive patients and non-responsive to negative ZIKV patients, even if the sample was DENV positive, indicating a possible differential diagnosis between them by NS2B. All samples used here were confirmed by CDC protocols, and immunosensor responses were also checked in the supernatant of C6/36 and in Vero cell cultures infected with ZIKV.
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9
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Rapid and Sensitive Point of Care Detection of MRSA Genomic DNA by Nanoelectrokinetic Sensors. CHEMOSENSORS 2021. [DOI: 10.3390/chemosensors9050097] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Biosensors have shown great potential in realizing rapid, low cost, and portable on-site detection for diseases. This work reports the development of a new bioelectronic sensor called AC electrokinetics-based capacitive (ABC) biosensor, for the detection of genomic DNA (gDNA) of methicillin-resistant Staphylococcus aureus (MRSA). The ABC sensor is based on interdigitated microelectrodes biofunctionalized with oligonucleotide probes. It uses a special AC signal for direct capacitive monitoring of topological change on nanostructured sensor surface, which simultaneously induces dielectrophoretic enrichment of target gDNAs. As a result, rapid and specific detection of gDNA/probe hybridization can be realized with high sensitivity. It requires no signal amplification such as labeling, hybridization chain reaction, or nucleic acid sequence-based amplification. This method involves only simple sample preparation. After optimization of nanostructured sensor surface and signal processing, the ABC sensor demonstrated fast turnaround of results (~10 s detection), excellent sensitivity (a detection limit of 4.7 DNA copies/µL MRSA gDNA), and high specificity, suitable for point of care diagnosis. As a bioelectronic sensor, the developed ABC sensors can be easily adapted for detections of other infectious agents.
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11
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Alam MA, Hasan MR, Anzar N, Suleman S, Narang J. Diagnostic approaches for the rapid detection of Zika virus–A review. Process Biochem 2021. [DOI: 10.1016/j.procbio.2020.11.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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12
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Jorge FA, Thomazella MV, Castro Moreira D, Lopes LDG, Teixeira JJV, Bertolini DA. Evolutions and upcoming on Zika virus diagnosis through an outbreak: A systematic review. Rev Med Virol 2020; 30:e2105. [DOI: 10.1002/rmv.2105] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 03/12/2020] [Accepted: 03/15/2020] [Indexed: 12/20/2022]
Affiliation(s)
- Fernando A. Jorge
- Department of Clinical Analysis and BiomedicineState University of Maringá Maringá Brazil
| | - Mateus V. Thomazella
- Medical Research Laboratory, School of MedicineUniversity of São Paulo São Paulo Brazil
| | - Deborah Castro Moreira
- Department of Clinical Analysis and BiomedicineState University of Maringá Maringá Brazil
| | - Luciana D. G. Lopes
- Department of Clinical Analysis and BiomedicineState University of Maringá Maringá Brazil
| | - Jorge J. V. Teixeira
- Department of Clinical Analysis and BiomedicineState University of Maringá Maringá Brazil
| | - Dennis A. Bertolini
- Department of Clinical Analysis and BiomedicineState University of Maringá Maringá Brazil
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An interdigitated microelectrode based aptasensor for real-time and ultratrace detection of four organophosphorus pesticides. Biosens Bioelectron 2019; 150:111879. [PMID: 31767346 DOI: 10.1016/j.bios.2019.111879] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 11/11/2019] [Accepted: 11/12/2019] [Indexed: 11/20/2022]
Abstract
With increasing industrialization of food production, residues of organophosphorus pesticides (OPs) are more frequently found in the environment including rivers, lakes and soils. Extended exposure to OPs, even at a level below 1 nM, may lead to liver and central nervous system damages in humans and animals, while existing detection methods are not sensitive enough to detect OPs at trace levels. We presented a simple-to-use aptasensor to rapidly detect broad-spectrum OPs with high sensitivity. DNA aptamer was modified on the surface of a micro interdigitated electrode chip, and AC electrokinetics was employed to accelerate the binding of OP molecules to the aptamer probe. The sensing strategy directly measured the interfacial capacitance whose change rate was adopted as a quantitative indicator of recognition events, with a sample to result detection time of 30 s. This aptasensor had a wide linear range of (fM ~ nM), and the detection limit reached (0.24-1.67) fM for four highly-toxic OPs, with good specificity. It still showed good activity after being stored in non-refrigerated environment for at least 14 days. This aptasensor as well as the detection method offer a promising solution for on-site and real-time sensitive OP detection.
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Wu J, Cheng C, Yuan Q, Oueslati R, Zhang J, Chen J, Almeida R. Simple, Fast And Highly Sensitive Detection Of Gram-Negative Bacteria By A Novel Electrical Biosensor. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2019; 2018:1279-1282. [PMID: 30440624 DOI: 10.1109/embc.2018.8512511] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
This work presents a rapid, low-cost, highly sensitive and specific capacitive sensor for detection of Gram negative bacteria in a field setting. Recognition of Gramnegative bacteria is based on specific detection of lipopolysaccharides (LPS) by LPS-specific aptamer probe immobilized on electrode sensors. An inhomogeneous AC electric field is applied on sensor electrodes and induces positive dielectrophoresis that attracts LPS particles to the sensor electrodes for rapid detection. The same AC signal is also used to detect the binding reactions occurred on the sensor surface. The AC signal was optimized, and the binding between LPS and the specific aptamer was demonstrated. The detection limit reaches as low as 4.9 fg/mL for free LPS molecules and 53 #/mL of bacteria within a 30s' response time, meeting the needs of onsite bacteria detection.
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Cheng C, Wu J, Chen J. A highly sensitive aptasensor for on-site detection of lipopolysaccharides in food. Electrophoresis 2018; 40:890-896. [DOI: 10.1002/elps.201800289] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 08/17/2018] [Accepted: 08/17/2018] [Indexed: 02/02/2023]
Affiliation(s)
- Cheng Cheng
- Department of Engineering and Technology Management; Morehead State University; Morehead KY USA
- Department of Electrical Engineering and Computer Science; The University of Tennessee; Knoxville TN USA
| | - Jayne Wu
- Department of Electrical Engineering and Computer Science; The University of Tennessee; Knoxville TN USA
| | - Jiangang Chen
- Department of Public Health; The University of Tennessee; Knoxville TN USA
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16
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Kaushik A, Yndart A, Kumar S, Jayant RD, Vashist A, Brown AN, Li CZ, Nair M. A sensitive electrochemical immunosensor for label-free detection of Zika-virus protein. Sci Rep 2018; 8:9700. [PMID: 29946074 PMCID: PMC6018776 DOI: 10.1038/s41598-018-28035-3] [Citation(s) in RCA: 103] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 06/14/2018] [Indexed: 12/16/2022] Open
Abstract
This work, as a proof of principle, presents a sensitive and selective electrochemical immunosensor for Zika-virus (ZIKV)-protein detection using a functionalized interdigitated micro-electrode of gold (IDE-Au) array. A miniaturized IDE-Au immunosensing chip was prepared via immobilization of ZIKV specific envelop protein antibody (Zev-Abs) onto dithiobis(succinimidyl propionate) i.e., (DTSP) functionalized IDE-Au (electrode gap/width of 10 µm). Electrochemical impedance spectroscopy (EIS) was performed to measure the electrical response of developed sensing chip as a function of ZIKV-protein concentrations. The results of EIS studies confirmed that sensing chip detected ZIKV-protein selectively and exhibited a detection range from 10 pM to 1 nM and a detection limit of 10 pM along with a high sensitivity of 12 kΩM-1. Such developed ZIKV immune-sensing chip can be integrated with a miniaturized potentiostat (MP)-interfaced with a smartphone for rapid ZIKV-infection detection required for early stage diagnostics at point-of-care application.
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Affiliation(s)
- Ajeet Kaushik
- Center of Personalized Nanomedicine, Institute of NeuroImmune Pharmacology, Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida, 33199, USA.
| | - Adriana Yndart
- Center of Personalized Nanomedicine, Institute of NeuroImmune Pharmacology, Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida, 33199, USA
| | - Sanjeev Kumar
- Biomedical Instrumentation, CSIR-Central Scientific Instruments Organization, Sector 30-C, Chandigarh, 160030, India
| | - Rahul Dev Jayant
- Center of Personalized Nanomedicine, Institute of NeuroImmune Pharmacology, Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida, 33199, USA
| | - Arti Vashist
- Center of Personalized Nanomedicine, Institute of NeuroImmune Pharmacology, Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida, 33199, USA
| | - Ashley N Brown
- Institute for Therapeutic Innovation, Department of Medicine, College of Medicine, University of Florida, Orlando, Florida, 32827, USA
| | - Chen-Zhong Li
- Nanobioengineering/Bioelectronics Laboratory, Department of Biomedical Engineering, Florida International University, 10555 West Flagler Street, Miami, Florida, 33174, USA
| | - Madhavan Nair
- Center of Personalized Nanomedicine, Institute of NeuroImmune Pharmacology, Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida, 33199, USA.
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Zhang J, Oueslati R, Cheng C, Zhao L, Chen J, Almeida R, Wu J. Rapid, highly sensitive detection of Gram-negative bacteria with lipopolysaccharide based disposable aptasensor. Biosens Bioelectron 2018; 112:48-53. [PMID: 29698808 DOI: 10.1016/j.bios.2018.04.034] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 04/14/2018] [Accepted: 04/16/2018] [Indexed: 01/08/2023]
Abstract
Gram-negative bacteria are one of the most common microorganisms in the environment. Their differential detection and recognition from Gram-positive bacteria has been attracting much attention over the years. Using Escherichia coli (E. coli) as a model, we demonstrated on-site detection of Gram-negative bacteria by an AC electrokinetics-based capacitive sensing method using commercial microelectrodes functionalized with an aptamer specific to lipopolysaccharides. Dielectrophoresis effect was utilized to enrich viable bacteria to the microelectrodes rapidly, achieving a detection limit of 102 cells/mL within a 30 s' response time. The sensor showed a negligible response to Staphylococcus aureus (S. aureus), a Gram-positive species. The developed sensor showed significant advantages in sensitivity, selectivity, cost, operation simplicity, and response time. Therefore, this sensing method has shown great application potential for environmental monitoring, food safety, and real-time diagnosis.
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Affiliation(s)
- Jian Zhang
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei 230009, China; Department of Electrical Engineering and Computer Science, The University of Tennessee, Knoxville, TN 37996, USA
| | - Rania Oueslati
- Department of Electrical Engineering and Computer Science, The University of Tennessee, Knoxville, TN 37996, USA
| | - Cheng Cheng
- Department of Electrical Engineering and Computer Science, The University of Tennessee, Knoxville, TN 37996, USA
| | - Ling Zhao
- Department of Nutrition, The University of Tennessee, Knoxville, TN 37996, USA
| | - Jiangang Chen
- Department of Public Health, The University of Tennessee, Knoxville, TN 37996, USA
| | - Raul Almeida
- Department of Animal Science, The University of Tennessee, Knoxville, TN 37996, USA
| | - Jayne Wu
- Department of Electrical Engineering and Computer Science, The University of Tennessee, Knoxville, TN 37996, USA.
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Cheng C, Oueslati R, Wu J, Chen J, Eda S. Capacitive DNA sensor for rapid and sensitive detection of whole genome human herpesvirus-1 dsDNA in serum. Electrophoresis 2017; 38:1617-1623. [DOI: 10.1002/elps.201700043] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Revised: 03/08/2017] [Accepted: 03/16/2017] [Indexed: 12/27/2022]
Affiliation(s)
- Cheng Cheng
- Department of Electrical Engineering and Computer Science; The University of Tennessee; Knoxville TN USA
| | - Rania Oueslati
- Department of Electrical Engineering and Computer Science; The University of Tennessee; Knoxville TN USA
| | - Jayne Wu
- Department of Electrical Engineering and Computer Science; The University of Tennessee; Knoxville TN USA
| | - Jiangang Chen
- Department of Public Health; The University of Tennessee; Knoxville TN USA
| | - Shigetoshi Eda
- Department of Forestry, Wildlife and Fisheries; The University of Tennessee Institute of Agriculture; Knoxville TN USA
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