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Zhong Y, Hu XG, Liu AL, Lei Y. Ultrasensitive amperometric determination of hand, foot and mouth disease based on gold nanoflower modified microelectrode. Anal Chim Acta 2023; 1252:341034. [PMID: 36935134 DOI: 10.1016/j.aca.2023.341034] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Accepted: 03/01/2023] [Indexed: 03/06/2023]
Abstract
Given the widespread use of point-of-care testing for diagnosis of disease, micro-scale electrochemical deoxyribonucleic acid (DNA) biosensors have become a promising area of research owing to its fast mass transfer, high current density and rapid response. In this study, a gold nanoparticles modified gold microelectrode (AuNPs/Au-Me) was constructed to determine the hand, foot and mouth disease (HFMD)-related gene. The noble metal nanoparticles modification yielded ca. 7.4-fold increase in electroactive surface area of microelectrode, and the signal for HFMD-related gene was largely magnified. Under optimal conditions, the biosensor exhibited salient selectivity and sensitivity with a low detection limit of 0.3 fM (S/N = 3), which is sufficient for clinical diagnosis of HFMD. Additionally, the developed AuNPs/Au-Me was successfully applied to determining the polymerase chain reaction (PCR) amplified products of target gene. Thus, the electrochemical DNA biosensor possesses great potential in early-stage diagnosis and long-term monitoring of various disease.
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Affiliation(s)
- Yu Zhong
- Department of Pharmaceutical Analysis, Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province, Faculty of Pharmacy, Fujian Medical University, Fuzhou, 350122, China
| | - Xiang-Guang Hu
- Department of Pharmaceutical Analysis, Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province, Faculty of Pharmacy, Fujian Medical University, Fuzhou, 350122, China
| | - Ai-Lin Liu
- Department of Pharmaceutical Analysis, Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province, Faculty of Pharmacy, Fujian Medical University, Fuzhou, 350122, China.
| | - Yun Lei
- Department of Pharmaceutical Analysis, Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province, Faculty of Pharmacy, Fujian Medical University, Fuzhou, 350122, China.
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Shaffaf T, Forouhi S, Ghafar-Zadeh E. Towards Fully Integrated Portable Sensing Devices for COVID-19 and Future Global Hazards: Recent Advances, Challenges, and Prospects. MICROMACHINES 2021; 12:915. [PMID: 34442537 PMCID: PMC8401608 DOI: 10.3390/mi12080915] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 07/25/2021] [Accepted: 07/28/2021] [Indexed: 01/08/2023]
Abstract
Since the onset of the coronavirus disease 2019 (COVID-19) pandemic, this fatal disease has been the leading cause of the death of more than 3.9 million people around the world. This tragedy taught us that we should be well-prepared to control the spread of such infectious diseases and prevent future hazards. As a consequence, this pandemic has drawn the attention of many researchers to the development of portable platforms with short hands-on and turnaround time suitable for batch production in urgent pandemic situations such as that of COVID-19. Two main groups of diagnostic assays have been reported for the detection of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) including nucleic acid-based and protein-based assays. The main focus of this paper is on the latter, which requires a shorter time duration, less skilled technicians, and faces lower contamination. Furthermore, this paper gives an overview of the complementary metal-oxide-semiconductor (CMOS) biosensors, which are potentially useful for implementing point-of-care (PoC) platforms based on such assays. CMOS technology, as a predominant technology for the fabrication of integrated circuits, is a promising candidate for the development of PoC devices by offering the advantages of reliability, accessibility, scalability, low power consumption, and distinct cost.
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Affiliation(s)
- Tina Shaffaf
- Biologically Inspired Sensors and Actuators Laboratory (BioSA), York University, Toronto, ON M3J 1P3, Canada; (T.S.); (S.F.)
- Department of Biology, Faculty of Science, York University, Toronto, ON M3J 1P3, Canada
| | - Saghi Forouhi
- Biologically Inspired Sensors and Actuators Laboratory (BioSA), York University, Toronto, ON M3J 1P3, Canada; (T.S.); (S.F.)
- Department of Electrical Engineering and Computer Science, Lassonde School of Engineering, York University, Toronto, ON M3J 1P3, Canada
| | - Ebrahim Ghafar-Zadeh
- Biologically Inspired Sensors and Actuators Laboratory (BioSA), York University, Toronto, ON M3J 1P3, Canada; (T.S.); (S.F.)
- Department of Biology, Faculty of Science, York University, Toronto, ON M3J 1P3, Canada
- Department of Electrical Engineering and Computer Science, Lassonde School of Engineering, York University, Toronto, ON M3J 1P3, Canada
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Krüger A, de Jesus Santos AP, de Sá V, Ulrich H, Wrenger C. Aptamer Applications in Emerging Viral Diseases. Pharmaceuticals (Basel) 2021; 14:ph14070622. [PMID: 34203242 PMCID: PMC8308861 DOI: 10.3390/ph14070622] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 05/31/2021] [Accepted: 06/01/2021] [Indexed: 02/07/2023] Open
Abstract
Aptamers are single-stranded DNA or RNA molecules which are submitted to a process denominated SELEX. SELEX uses reiterative screening of a random oligonucleotide library to identify high-affinity binders to a chosen target, which may be a peptide, protein, or entire cells or viral particles. Aptamers can rival antibodies in target recognition, and benefit from their non-proteic nature, ease of modification, increased stability, and pharmacokinetic properties. This turns them into ideal candidates for diagnostic as well as therapeutic applications. Here, we review the recent accomplishments in the development of aptamers targeting emerging viral diseases, with emphasis on recent findings of aptamers binding to coronaviruses. We focus on aptamer development for diagnosis, including biosensors, in addition to aptamer modifications for stabilization in body fluids and tissue penetration. Such aptamers are aimed at in vivo diagnosis and treatment, such as quantification of viral load and blocking host cell invasion, virus assembly, or replication, respectively. Although there are currently no in vivo applications of aptamers in combating viral diseases, such strategies are promising for therapy development in the future.
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Affiliation(s)
- Arne Krüger
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000-SP, Brazil;
| | - Ana Paula de Jesus Santos
- Department of Biochemistry, Institute of Chemistry, University of São Paulo, São Paulo 05508-900-SP, Brazil; (A.P.d.J.S.); (V.d.S.)
| | - Vanessa de Sá
- Department of Biochemistry, Institute of Chemistry, University of São Paulo, São Paulo 05508-900-SP, Brazil; (A.P.d.J.S.); (V.d.S.)
| | - Henning Ulrich
- Department of Biochemistry, Institute of Chemistry, University of São Paulo, São Paulo 05508-900-SP, Brazil; (A.P.d.J.S.); (V.d.S.)
- Correspondence: (H.U.); (C.W.)
| | - Carsten Wrenger
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000-SP, Brazil;
- Correspondence: (H.U.); (C.W.)
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Shaffaf T, Ghafar-Zadeh E. COVID-19 Diagnostic Strategies. Part I: Nucleic Acid-Based Technologies. Bioengineering (Basel) 2021; 8:49. [PMID: 33920513 PMCID: PMC8072613 DOI: 10.3390/bioengineering8040049] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 04/14/2021] [Accepted: 04/15/2021] [Indexed: 12/11/2022] Open
Abstract
The novel Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) has caused respiratory infection, resulting in more than two million deaths globally and hospitalizing thousands of people by March 2021. A considerable percentage of the SARS-CoV-2 positive patients are asymptomatic or pre-symptomatic carriers, facilitating the viral spread in the community by their social activities. Hence, it is critical to have access to commercialized diagnostic tests to detect the infection in the earliest stages, monitor the disease, and follow up the patients. Various technologies have been proposed to develop more promising assays and move toward the mass production of fast, reliable, cost-effective, and portable PoC diagnostic tests for COVID-19 detection. Not only COVID-19 but also many other pathogens will be able to spread and attach to human bodies in the future. These technologies enable the fast identification of high-risk individuals during future hazards to support the public in such outbreaks. This paper provides a comprehensive review of current technologies, the progress in the development of molecular diagnostic tests, and the potential strategies to facilitate innovative developments in unprecedented pandemics.
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Affiliation(s)
- Tina Shaffaf
- Biologically Inspired Sensors and Actuators Laboratory (BioSA), York University, Toronto, ON M3J1P3, Canada;
- Faculty of Science, Department of Biology, York University, Toronto, ON M3J1P3, Canada
| | - Ebrahim Ghafar-Zadeh
- Biologically Inspired Sensors and Actuators Laboratory (BioSA), York University, Toronto, ON M3J1P3, Canada;
- Faculty of Science, Department of Biology, York University, Toronto, ON M3J1P3, Canada
- Lassonde School of Engineering, Department of Electrical Engineering and Computer Science, York University, Toronto, ON M3J1P3, Canada
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The Latest Achievements in the Construction of Influenza Virus Detection Aptasensors. Viruses 2020; 12:v12121365. [PMID: 33265901 PMCID: PMC7760490 DOI: 10.3390/v12121365] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 11/14/2020] [Accepted: 11/23/2020] [Indexed: 12/14/2022] Open
Abstract
Aptamers are short fragments of nucleic acids, DNA or RNA that have the ability to bind selected proteins with high specificity and affinity. These properties allow them to be used as an element of biosensors for the detection of specific proteins, including viral ones, which makes it possible to design valuable diagnostic tools. The influenza virus causes a huge number of human and animal deaths worldwide every year, and contributes to remarkable economic losses. In addition, in 2020, a new threat appeared-the SARS-Cov-2 pandemic. Both disease entities, especially in the initial stage of infection, are almost identical in terms of signs and symptoms. Therefore, a diagnostic solution is needed that will allow distinguishing between both pathogens, with high sensitivity and specificity; it should be cheap, quick and possible to use in the field, for example, in a doctor's office. All the mentioned properties are met by aptasensors in which the detection elements are specific aptamers. We present here the latest developments in the construction of various types of aptasensors for the detection of influenza virus. Aptasensor operation is based on the measurement of changes in electric impedance, fluorescence or electric signal (impedimetric, fluorescence and electrochemical aptasensors, respectively); it allows both qualitative and quantitative determinations. The particularly high advancement for detecting of influenza virus concerns impedimetric aptasensors.
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Forouhi S, Ghafar-Zadeh E. Applications of CMOS Devices for the Diagnosis and Control of Infectious Diseases. MICROMACHINES 2020; 11:E1003. [PMID: 33202888 PMCID: PMC7698050 DOI: 10.3390/mi11111003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 11/03/2020] [Accepted: 11/06/2020] [Indexed: 12/25/2022]
Abstract
Emerging infectious diseases such as coronavirus disease of 2019 (COVID-19), Ebola, influenza A, severe acute respiratory syndrome (SARS) and Middle East respiratory syndrome (MERS) in recent years have threatened the health and security of the global community as one of the greatest factors of mortality in the world. Accurate and immediate diagnosis of infectious agents and symptoms is a key to control the outbreak of these diseases. Rapid advances in complementary metal-oxide-semiconductor (CMOS) technology offers great advantages like high accuracy, high throughput and rapid measurements in biomedical research and disease diagnosis. These features as well as low cost, low power and scalability of CMOS technology can pave the way for the development of powerful devices such as point-of-care (PoC) systems, lab-on-chip (LoC) platforms and symptom screening devices for accurate and timely diagnosis of infectious diseases. This paper is an overview of different CMOS-based devices such as optical, electrochemical, magnetic and mechanical sensors developed by researchers to mitigate the problems associated with these diseases.
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Affiliation(s)
- Saghi Forouhi
- Biologically Inspired Sensors and Actuators (BioSA), Department of Electrical Engineering and Computer Science (EECS), Lassonde School of Engineering, York University, Toronto, ON M3J 1P3, Canada;
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Wang L, Zhang W, Samavat S, Deganello D, Teng KS. Vertically Aligned Graphene Prepared by Photonic Annealing for Ultrasensitive Biosensors. ACS APPLIED MATERIALS & INTERFACES 2020; 12:35328-35336. [PMID: 32657575 DOI: 10.1021/acsami.0c08036] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Graphene exhibits excellent physical, electronic, and chemical properties that are highly desirable for biosensing applications. However, most graphene biosensors are based on graphene lying flat on a substrate and therefore do not utilize its maximum specific surface area for ultrasensitive detection. Herein, we report the novel use of photonic annealing on a flexographically printed graphene-ethyl cellulose composite to produce vertically aligned graphene (VAG) biosensors for ultrasensitive detection of algal toxins in drinking water. These VAG structures, which maximized the specific surface area of graphene, were formed by partial removal of the polymeric binder upon applying intense pulsed light on the printed graphene. A label-free and low-cost VAG biosensor based on a non-faradaic electrochemical impedance spectroscopy technique was fabricated. The biosensor exhibited a limit of detection of 1.2 ng/L for microcystin-LR in local tap water. Such an ultrasensitive VAG biosensor is suitable for low-cost mass production using an integrated roll-to-roll flexographic printing with rapid photonic annealing technique.
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Affiliation(s)
- Lue Wang
- College of Engineering, Swansea University, Bay Campus, Swansea SA1 8EN, U.K
| | - Wei Zhang
- College of Engineering, Swansea University, Bay Campus, Swansea SA1 8EN, U.K
| | - Siamak Samavat
- College of Engineering, Swansea University, Bay Campus, Swansea SA1 8EN, U.K
| | - Davide Deganello
- College of Engineering, Swansea University, Bay Campus, Swansea SA1 8EN, U.K
| | - Kar Seng Teng
- College of Engineering, Swansea University, Bay Campus, Swansea SA1 8EN, U.K
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Deshmukh R, Prusty AK, Roy U, Bhand S. A capacitive DNA sensor for sensitive detection ofEscherichia coliO157:H7 in potable water based on thez3276genetic marker: fabrication and analytical performance. Analyst 2020; 145:2267-2278. [DOI: 10.1039/c9an02291k] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
We report a label-free biosensor for the detection ofEscherichia coliO157:H7 ATCC 43895 in potable water using a newly designed DNA sensing probe targeting thez3276genetic marker.
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Affiliation(s)
- Rehan Deshmukh
- Birla institute of Technology and Science
- Pilani
- Department of Biological Sciences
- India
| | - Arun Kumar Prusty
- Birla institute of Technology and Science
- Pilani
- Department of Chemistry
- India
| | - Utpal Roy
- Birla institute of Technology and Science
- Pilani
- Department of Biological Sciences
- India
| | - Sunil Bhand
- Birla institute of Technology and Science
- Pilani
- Department of Chemistry
- India
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9
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Ultrasensitive and label-free biosensor for the detection of Plasmodium falciparum histidine-rich protein II in saliva. Sci Rep 2019; 9:17495. [PMID: 31767887 PMCID: PMC6877566 DOI: 10.1038/s41598-019-53852-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Accepted: 11/06/2019] [Indexed: 11/08/2022] Open
Abstract
Malaria elimination is a global public health priority. To fulfil the demands of elimination diagnostics, we have developed an interdigitated electrode sensor platform targeting the Plasmodium falciparum Histidine Rich Protein 2 (PfHRP2) protein in saliva samples. A protocol for frequency-specific PfHRP2 detection in phosphate buffered saline was developed, yielding a sensitivity of 2.5 pg/mL based on change in impedance magnitude of the sensor. This protocol was adapted and optimized for use in saliva with a sensitivity of 25 pg/mL based on change in resistance. Further validation demonstrated detection in saliva spiked with PfHRP2 from clinical isolates in 8 of 11 samples. With a turnaround time of ~2 hours, the label-free platform based on impedance sensors has the potential for miniaturization into a point-of-care diagnostic device for malaria elimination.
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Zainuddin NH, Chee HY, Ahmad MZ, Mahdi MA, Abu Bakar MH, Yaacob MH. Sensitive Leptospira DNA detection using tapered optical fiber sensor. JOURNAL OF BIOPHOTONICS 2018; 11:e201700363. [PMID: 29570957 DOI: 10.1002/jbio.201700363] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2017] [Revised: 03/16/2018] [Accepted: 03/19/2018] [Indexed: 06/08/2023]
Abstract
This paper presents the development of tapered optical fiber sensor to detect a specific Leptospira bacteria DNA. The bacteria causes Leptospirosis, a deadly disease but with common early flu-like symptoms. Optical single mode fiber (SMF) of 125 μm diameter is tapered to produce 12 μm waist diameter and 15 cm length. The novel DNA-based optical fiber sensor is functionalized by incubating the tapered region with sodium hydroxide (NaOH), (3-Aminopropyl) triethoxysilane and glutaraldehyde. Probe DNA is immobilized onto the tapered region and subsequently hybridized by its complementary DNA (cDNA). The transmission spectra of the DNA-based optical fiber sensor are measured in the 1500 to 1600 nm wavelength range. It is discovered that the shift of the wavelength in the SMF sensor is linearly proportional with the increase in the cDNA concentrations from 0.1 to 1.0 nM. The sensitivity of the sensor toward DNA is measured to be 1.2862 nm/nM and able to detect as low as 0.1 fM. The sensor indicates high specificity when only minimal shift is detected for non-cDNA testing. The developed sensor is able to distinguish between actual DNA of Leptospira serovars (Canicola and Copenhageni) against Clostridium difficile (control sample) at very low (femtomolar) target concentrations.
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Affiliation(s)
- Nurul H Zainuddin
- Department of Computer and Communication Systems, Faculty of Engineering, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
- Wireless and Photonic Networks Research Centre (WiPNET), Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Hui Y Chee
- Department of Microbiology and Parasitology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Muhammad Z Ahmad
- Biotechnology and Nanotechnology Research Center, Malaysian Agricultural Research and Development Institute (MARDI), Serdang, Selangor, Malaysia
| | - Mohd A Mahdi
- Department of Computer and Communication Systems, Faculty of Engineering, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
- Wireless and Photonic Networks Research Centre (WiPNET), Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Muhammad H Abu Bakar
- Department of Computer and Communication Systems, Faculty of Engineering, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
- Wireless and Photonic Networks Research Centre (WiPNET), Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Mohd H Yaacob
- Department of Computer and Communication Systems, Faculty of Engineering, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
- Wireless and Photonic Networks Research Centre (WiPNET), Universiti Putra Malaysia, Serdang, Selangor, Malaysia
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An interdigitated electrode biosensor platform for rapid HLA-B*15:02 genotyping for prevention of drug hypersensitivity. Biosens Bioelectron 2018; 111:174-183. [DOI: 10.1016/j.bios.2018.01.063] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Revised: 01/28/2018] [Accepted: 01/30/2018] [Indexed: 11/30/2022]
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Hasan MR, Pulingam T, Appaturi JN, Zifruddin AN, Teh SJ, Lim TW, Ibrahim F, Leo BF, Thong KL. Carbon nanotube-based aptasensor for sensitive electrochemical detection of whole-cell Salmonella. Anal Biochem 2018; 554:34-43. [PMID: 29870692 DOI: 10.1016/j.ab.2018.06.001] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 06/01/2018] [Accepted: 06/01/2018] [Indexed: 10/14/2022]
Abstract
In this study, an amino-modified aptasensor using multi-walled carbon nanotubes (MWCNTs)-deposited ITO electrode was prepared and evaluated for the detection of pathogenic Salmonella bacteria. An amino-modified aptamer (ssDNA) which binds selectively to whole-cell Salmonella was immobilised on the COOH-rich MWCNTs to produce the ssDNA/MWCNT/ITO electrode. The morphology of the MWCNT before and after interaction with the aptamers were observed using scanning electron microscopy (SEM). Cyclic voltammetry and electrochemical impedance spectroscopy techniques were used to investigate the electrochemical properties and conductivity of the aptasensor. The results showed that the impedance measured at the ssDNA/MWCNT/ITO electrode surface increased after exposure to Salmonella cells, which indicated successful binding of Salmonella on the aptamer-functionalised surface. The developed ssDNA/MWCNT/ITO aptasensor was stable and maintained linearity when the scan rate was increased from 10 mV s-1 to 90 mV s-1. The detection limit of the ssDNA/MWCNT/ITO aptasensor, determined from the sensitivity analysis, was found to be 5.5 × 101 cfu mL-1 and 6.7 × 101 cfu mL-1 for S. Enteritidis and S. Typhimurium, respectively. The specificity test demonstrated that Salmonella bound specifically to the ssDNA/MWCNT/ITO aptasensor surface, when compared with non-Salmonella spp. The prepared aptasensor was successfully applied for the detection of Salmonella in food samples.
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Affiliation(s)
- Md Rakibul Hasan
- Nanotechnology & Catalysis Research Centre (NANOCAT), Institute of Graduate Studies, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Thiruchelvi Pulingam
- Nanotechnology & Catalysis Research Centre (NANOCAT), Institute of Graduate Studies, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Jimmy Nelson Appaturi
- Nanotechnology & Catalysis Research Centre (NANOCAT), Institute of Graduate Studies, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Anis Nadyra Zifruddin
- Institute of Biological Science, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Swe Jyan Teh
- Centre for Innovation in Medical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Teck Wei Lim
- Institute of Biological Science, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Fatimah Ibrahim
- Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Bey Fen Leo
- Centre for Innovation in Medical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia; Department of Biomedical Imaging, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Kwai Lin Thong
- Institute of Biological Science, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia.
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Coffel J, Nuxoll E. BioMEMS for biosensors and closed-loop drug delivery. Int J Pharm 2018; 544:335-349. [PMID: 29378239 DOI: 10.1016/j.ijpharm.2018.01.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2017] [Revised: 01/10/2018] [Accepted: 01/14/2018] [Indexed: 12/14/2022]
Abstract
The efficacy of pharmaceutical treatments can be greatly enhanced by physiological feedback from the patient using biosensors, though this is often invasive or infeasible. By adapting microelectromechanical systems (MEMS) technology to miniaturize such biosensors, previously inaccessible signals can be obtained, often from inside the patient. This is enabled by the device's extremely small footprint which minimizes both power consumption and implantation trauma, as well as the transport time for chemical analytes, in turn decreasing the sensor's response time. MEMS fabrication also allows mass production which can be easily scaled without sacrificing its high reproducibility and reliability, and allows seamless integration with control circuitry and telemetry which is already produced using the same materials and fabrication steps. By integrating these systems with drug delivery devices, many of which are also MEMS-based, closed loop drug delivery can be achieved. This paper surveys the types of signal transduction devices available for biosensing-primarily electrochemical, optical, and mechanical-looking at their implementation via MEMS technology. The impact of MEMS technology on the challenges of biosensor development, particularly safety, power consumption, degradation, fouling, and foreign body response, are also discussed.
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Affiliation(s)
- Joel Coffel
- Department of Chemical and Biochemical Engineering, 4133 Seamans Center for the Engineering Arts & Sciences, University of Iowa, Iowa City, IA 52242, USA
| | - Eric Nuxoll
- Department of Chemical and Biochemical Engineering, 4133 Seamans Center for the Engineering Arts & Sciences, University of Iowa, Iowa City, IA 52242, USA.
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Nabovati G, Ghafar-Zadeh E, Letourneau A, Sawan M. Towards High Throughput Cell Growth Screening: A New CMOS 8 × 8 Biosensor Array for Life Science Applications. IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS 2017; 11:380-391. [PMID: 28113953 DOI: 10.1109/tbcas.2016.2593639] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
In this paper we present a CMOS capacitive sensor array as a compact and low-cost platform for high-throughput cell growth monitoring. The proposed biosensor, consists of an array of 8 × 8 CMOS fully differential charge-based capacitive measurement sensors. A DC-input Σ∆ modulator is used to convert the sensors' signals to digital values for reading out the biological/chemical data and further signal processing. To compensate the mismatch variations between the current mirror transistors, a calibration circuitry is proposed which removes the output voltage offset with less than 8.2% error. We validate the chip functionality using various organic solvents with different dielectric constants. Moreover, we show the response of the chip to different concentrations of Polystyrene beads that have the same electrical properties as the living cells. The experimental results show that the chip allows the detection of a wide range of Polystyrene beads concentrations from as low as 10 beads/ml to 100 k beads/ml. In addition, we present the experimental results from H1299 (human lung carcinoma) cell line where we show that the chip successfully allows the detection of cell attachment and growth over capacitive electrodes in a 30 h measurement time and the results are in consistency with the standard cell-based assays. The capability of proposed device for label-free and real-time detection of cell growth with very high sensitivity opens up the important opportunity for utilizing the device in rapid screening of living cells.
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Vello TP, da Silva LM, Silva GO, de Camargo DH, Corrêa CC, Bof Bufon CC. Hybrid organic/inorganic interfaces as reversible label-free platform for direct monitoring of biochemical interactions. Biosens Bioelectron 2017; 87:209-215. [DOI: 10.1016/j.bios.2016.08.050] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 08/05/2016] [Accepted: 08/16/2016] [Indexed: 01/06/2023]
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Assaifan AK, Lloyd JS, Samavat S, Deganello D, Stanton RJ, Teng KS. Nanotextured Surface on Flexographic Printed ZnO Thin Films for Low-Cost Non-Faradaic Biosensors. ACS APPLIED MATERIALS & INTERFACES 2016; 8:33802-33810. [PMID: 27960397 DOI: 10.1021/acsami.6b11640] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this work, the formation of a nanotextured surface is reported on flexographic printed zinc oxide thin films which provide an excellent platform for low-cost, highly sensitive biosensing applications. The ability to produce nanotextured surfaces using a high-throughput, roll-to-roll production method directly from precursor ink without any complicated processes is commercially attractive for biosensors that are suitable for large-scale screening of diseases at low cost. The zinc oxide thin film was formed by printing a zinc acetate precursor ink solution and annealing at 300 °C. An intricate nanotexturing of the film surface was achieved through 150 °C drying process between multiple prints. These surface nanostructures were found to be in the range of 100 to 700 nm in length with a width of 58 ± 18 nm and a height of between 20 and 60 nm. Such structures significantly increase the surface area to volume ratio of the biosensing material, which is essential to high sensitivity detection of diseases. Nonfaradaic electrochemical impedance spectroscopy measurements were carried out to detect the pp65-antigen of the human cytomegalovirus using the printed device, which has a low limit of detection of 5 pg/mL.
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Affiliation(s)
| | | | | | | | - Richard J Stanton
- Institute of Infection & Immunity, School of Medicine, Cardiff University , Henry Wellcome Building, Heath Park, Cardiff CF14 4XN, United Kingdom
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Multiplexed detection of influenza A virus subtype H5 and H9 via quantum dot-based immunoassay. Biosens Bioelectron 2015; 77:464-70. [PMID: 26454828 PMCID: PMC7126372 DOI: 10.1016/j.bios.2015.10.002] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 09/16/2015] [Accepted: 10/01/2015] [Indexed: 12/11/2022]
Abstract
A quantum dot-based lateral flow immunoassay system (QD-LFIAS) was developed to simultaneously detect both influenza A virus subtypes H5 and H9. Water-soluble carboxyl-functionalized quantum dots (QDs) were used as fluorescent tags. The QDs were conjugated to specific influenza A virus subtype H5 and H9 antibodies via an amide bond. When influenza A virus subtype H5 or H9 was added to the QD-LFIAS, the QD-labeled antibodies specifically bound to the H5 or H9 subtype viruses and were then captured by the coating antibodies at test line 1 or 2 to form a sandwich complex. This complex produced a bright fluorescent band in response to 365 nm ultraviolet excitation. The intensity of fluorescence can be detected using an inexpensive, low-maintenance instrument, and the virus concentration directly correlates with the fluorescence intensity. The detection limit of the QD-LFIAS for influenza A virus subtype H5 was 0.016 HAU, and the detection limit of the QD-LFIAS for influenza A virus subtype H9 was 0.25 HAU. The specificity and reproducibility were good. The simple analysis step and objective results that can be obtained within 15 min indicate that this QD-LFIAS is a highly efficient test that can be used to monitor and prevent both Influenza A virus subtypes H5 and H9.
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Lum J, Wang R, Hargis B, Tung S, Bottje W, Lu H, Li Y. An Impedance Aptasensor with Microfluidic Chips for Specific Detection of H5N1 Avian Influenza Virus. SENSORS 2015; 15:18565-78. [PMID: 26230699 PMCID: PMC4570336 DOI: 10.3390/s150818565] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Revised: 07/17/2015] [Accepted: 07/21/2015] [Indexed: 12/20/2022]
Abstract
In this research a DNA aptamer, which was selected through SELEX (systematic evolution of ligands by exponential enrichment) to be specific against the H5N1 subtype of the avian influenza virus (AIV), was used as an alternative reagent to monoclonal antibodies in an impedance biosensor utilizing a microfluidics flow cell and an interdigitated microelectrode for the specific detection of H5N1 AIV. The gold surface of the interdigitated microelectrode embedded in a microfluidics flow cell was modified using streptavidin. The biotinylated aptamer against H5N1 was then immobilized on the electrode surface using biotin-streptavidin binding. The target virus was captured on the microelectrode surface, causing an increase in impedance magnitude. The aptasensor had a detection time of 30 min with a detection limit of 0.0128 hemagglutinin units (HAU). Scanning electron microscopy confirmed the binding of the target virus onto the electrode surface. The DNA aptamer was specific to H5N1 and had no cross-reaction to other subtypes of AIV (e.g., H1N1, H2N2, H7N2). The newly developed aptasensor offers a portable, rapid, low-cost alternative to current methods with the same sensitivity and specificity.
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Affiliation(s)
- Jacob Lum
- Cell and Molecular Biology Program, University of Arkansas, Fayetteville, AR 72701, USA.
| | - Ronghui Wang
- Department of Biological and Agricultural Engineering, University of Arkansas, Fayetteville, AR 72701, USA.
| | - Billy Hargis
- Department of Poultry Science, University of Arkansas, Fayetteville, AR 72701, USA.
| | - Steve Tung
- Department of Mechanical Engineering, University of Arkansas, Fayetteville, AR 72701, USA.
| | - Walter Bottje
- Department of Poultry Science, University of Arkansas, Fayetteville, AR 72701, USA.
| | - Huaguang Lu
- Animal Diagnostic Laboratory, Pennsylvania State University, University Park, PA 16802, USA.
| | - Yanbin Li
- Department of Biological and Agricultural Engineering, University of Arkansas, Fayetteville, AR 72701, USA.
- Department of Poultry Science, University of Arkansas, Fayetteville, AR 72701, USA.
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Arya SK, Wong CC, Jeon YJ, Bansal T, Park MK. Advances in complementary-metal-oxide-semiconductor-based integrated biosensor arrays. Chem Rev 2015; 115:5116-58. [PMID: 26017544 DOI: 10.1021/cr500554n] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sunil K Arya
- Institute of Microelectronics, 11 Science Park Road, Singapore Science Park II, Singapore 117685
| | - Chee Chung Wong
- Institute of Microelectronics, 11 Science Park Road, Singapore Science Park II, Singapore 117685
| | - Yong Joon Jeon
- Institute of Microelectronics, 11 Science Park Road, Singapore Science Park II, Singapore 117685
| | - Tushar Bansal
- Institute of Microelectronics, 11 Science Park Road, Singapore Science Park II, Singapore 117685
| | - Mi Kyoung Park
- Institute of Microelectronics, 11 Science Park Road, Singapore Science Park II, Singapore 117685
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A Label-Free Impedimetric DNA Sensor Based on a Nanoporous SnO₂ Film: Fabrication and Detection Performance. SENSORS 2015; 15:10686-704. [PMID: 25954951 PMCID: PMC4481975 DOI: 10.3390/s150510686] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Revised: 04/27/2015] [Accepted: 05/04/2015] [Indexed: 11/28/2022]
Abstract
Nanoporous SnO2 thin films were elaborated to serve as sensing electrodes for label-free DNA detection using electrochemical impedance spectroscopy (EIS). Films were deposited by an electrodeposition process (EDP). Then the non-Faradic EIS behaviour was thoroughly investigated during some different steps of functionalization up to DNA hybridization. The results have shown a systematic decrease of the impedance upon DNA hybridization. The impedance decrease is attributed to an enhanced penetration of ionic species within the film volume. Besides, the comparison of impedance variations upon DNA hybridization between the liquid and vapour phase processes for organosilane (APTES) grafting on the nanoporous SnO2 films showed that vapour-phase method is more efficient. This is due to the fact that the vapour is more effective than the solution in penetrating the nanopores of the films. As a result, the DNA sensors built from vapour-treated silane layer exhibit a higher sensitivity than those produced from liquid-treated silane, in the range of tested target DNA concentration going to 10 nM. Finally, the impedance and fluorescence response signals strongly depend on the types of target DNA molecules, demonstrating a high selectivity of the process on nanoporous SnO2 films.
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Le MH, Fradetal L, Delabouglise D, Mai AT, Stambouli V. Fluorescence and Label Free Impedimetric DNA Detection on SnO2Nanopillars. ELECTROANAL 2015. [DOI: 10.1002/elan.201400595] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Ghafar-Zadeh E. Wireless integrated biosensors for point-of-care diagnostic applications. SENSORS 2015; 15:3236-61. [PMID: 25648709 PMCID: PMC4367357 DOI: 10.3390/s150203236] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 12/03/2014] [Indexed: 11/16/2022]
Abstract
Recent advances in integrated biosensors, wireless communication and power harvesting techniques are enticing researchers into spawning a new breed of point-of-care (POC) diagnostic devices that have attracted significant interest from industry. Among these, it is the ones equipped with wireless capabilities that drew our attention in this review paper. Indeed, wireless POC devices offer a great advantage, that of the possibility of exerting continuous monitoring of biologically relevant parameters, metabolites and other bio-molecules, relevant to the management of various morbid diseases such as diabetes, brain cancer, ischemia, and Alzheimer's. In this review paper, we examine three major categories of miniaturized integrated devices, namely; the implantable Wireless Bio-Sensors (WBSs), the wearable WBSs and the handheld WBSs. In practice, despite the aforesaid progress made in developing wireless platforms, early detection of health imbalances remains a grand challenge from both the technological and the medical points of view. This paper addresses such challenges and reports the state-of-the-art in this interdisciplinary field.
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Affiliation(s)
- Ebrahim Ghafar-Zadeh
- Department of Electrical Engineering and Computer Sciences, Lassonde School of Engineering, York University, Toronto, ON M3J1P3, Canada.
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23
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Sensing strategies for influenza surveillance. Biosens Bioelectron 2014; 61:357-69. [DOI: 10.1016/j.bios.2014.05.024] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 04/12/2014] [Accepted: 05/11/2014] [Indexed: 01/06/2023]
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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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Mahdavi M, Samaeian A, Hajmirzaheydarali M, Shahmohammadi M, Mohajerzadeh S, Malboobi MA. Label-free detection of DNA hybridization using a porous poly-Si ion-sensitive field effect transistor. RSC Adv 2014. [DOI: 10.1039/c4ra07433e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Ye WW, Tsang MK, Liu X, Yang M, Hao J. Upconversion luminescence resonance energy transfer (LRET)-based biosensor for rapid and ultrasensitive detection of avian influenza virus H7 subtype. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:2390-7. [PMID: 24599581 DOI: 10.1002/smll.201303766] [Citation(s) in RCA: 94] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2013] [Revised: 01/09/2014] [Indexed: 05/20/2023]
Abstract
Avian influenza viruses (AIV) with good adaptation and various mutations have threatened both human and animals' health. The H7 subtypes have the potential to cause pandemic threats to human health due to the highly pathogenic characteristics. Therefore, it is quite urgent to develop a novel biosensor for rapid and sensitive detection of H7 subtypes. In this work, a biosensor based on luminescence resonance energy transfer (LRET) from BaGdF5:Yb/Er upconversion nanoparticles (UCNPs) to gold nanoparticles (AuNPs) has been developed for rapid and sensitive H7 subtypes detection. The amino modified capture oligonucleotide probes are covalently linked to poly(ethylenimine) (PEI) modified BaGdF5:Yb/Er UCNPs. The thiol modified oligonucleotides with H7 hemagglutinin gene sequence are conjugated to surfaces of AuNPs. The hybridization process between complementary strands of H7 Hemagglutinin gene and its probe brings the energy donor and acceptor into close proximity, leading to the quenching of fluorescence of UCNPs. A linear response is obtained ranging from 10 pm to 10 nm and the limit of detection (LOD) is around 7 pm with detection time around 2 hours. This biosensor is expected to be a valuable diagnostic tool for rapid and sensitive detection of AIV.
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MESH Headings
- Animals
- Biosensing Techniques/instrumentation
- Biosensing Techniques/methods
- Birds
- Fluorescence Resonance Energy Transfer/instrumentation
- Fluorescence Resonance Energy Transfer/methods
- Gold
- Hemagglutinin Glycoproteins, Influenza Virus/genetics
- Humans
- Influenza A Virus, H7N1 Subtype/genetics
- Influenza A Virus, H7N1 Subtype/isolation & purification
- Influenza A Virus, H7N2 Subtype/genetics
- Influenza A Virus, H7N2 Subtype/isolation & purification
- Influenza A Virus, H7N3 Subtype/genetics
- Influenza A Virus, H7N3 Subtype/isolation & purification
- Influenza A Virus, H7N7 Subtype/genetics
- Influenza A Virus, H7N7 Subtype/isolation & purification
- Influenza A Virus, H7N9 Subtype/genetics
- Influenza A Virus, H7N9 Subtype/isolation & purification
- Influenza A virus/classification
- Influenza A virus/genetics
- Influenza A virus/isolation & purification
- Influenza in Birds/diagnosis
- Influenza in Birds/virology
- Influenza, Human/diagnosis
- Influenza, Human/genetics
- Limit of Detection
- Luminescence
- Metal Nanoparticles/chemistry
- Sensitivity and Specificity
- Time Factors
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Affiliation(s)
- Wei Wei Ye
- Interdisciplinary Division of Biomedical Engineering, the Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, P. R. China
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Ianeselli L, Grenci G, Callegari C, Tormen M, Casalis L. Development of stable and reproducible biosensors based on electrochemical impedance spectroscopy: three-electrode versus two-electrode setup. Biosens Bioelectron 2013; 55:1-6. [PMID: 24355458 DOI: 10.1016/j.bios.2013.11.067] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Accepted: 11/25/2013] [Indexed: 01/05/2023]
Abstract
This work focuses on the development of electrochemical impedance biosensors based on capacitance readout, for the detection of biomolecules in small sample volumes. We performed electrochemical impedance spectroscopy (EIS) measurements of DNA hybridization in electrochemical cells with microfabricated gold electrodes. The time stability of the device was tested in two different configurations: two microelectrodes in a microfluidic channel; two microelectrodes plus a reference electrode in an electrochemical cell. Our results demonstrate that the three-electrode setup is more stable, more reproducible, and suitable for real-time measurements. In the last part of the work we perform a test study of DNA hybridization in real time, and we show that the three-electrode configuration can measure the process in situ and in real time.
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Affiliation(s)
| | - Gianluca Grenci
- CNR-IOM, Laboratorio TASC, Area Science Park, Basovizza, Strada Statale 14 km 163.5, Trieste I-34149, Italy
| | - Carlo Callegari
- Elettra-Sincrotrone Trieste S.C.p.A., S.S. 14 km 163.5, In Area Science Park, Basovizza, Trieste 34149, Italy
| | - Massimo Tormen
- CNR-IOM, Laboratorio TASC, Area Science Park, Basovizza, Strada Statale 14 km 163.5, Trieste I-34149, Italy
| | - Loredana Casalis
- Elettra-Sincrotrone Trieste S.C.p.A., S.S. 14 km 163.5, In Area Science Park, Basovizza, Trieste 34149, Italy.
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Cherstvy A. Detection of DNA hybridization by field-effect DNA-based biosensors: mechanisms of signal generation and open questions. Biosens Bioelectron 2013; 46:162-70. [DOI: 10.1016/j.bios.2013.02.026] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Revised: 02/05/2013] [Accepted: 02/13/2013] [Indexed: 01/27/2023]
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Malecka K, Grabowska I, Radecki J, Stachyra A, Góra-Sochacka A, Sirko A, Radecka H. Electrochemical Detection of Avian Influenza Virus Genotype Using Amino-ssDNA Probe Modified Gold Electrodes. ELECTROANAL 2013. [DOI: 10.1002/elan.201300113] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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30
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Krejcova L, Hynek D, Kopel P, Merlos Rodrigo MA, Adam V, Hubalek J, Babula P, Trnkova L, Kizek R. Development of a magnetic electrochemical bar code array for point mutation detection in the H5N1 neuraminidase gene. Viruses 2013; 5:1719-39. [PMID: 23860384 PMCID: PMC3738958 DOI: 10.3390/v5071719] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Revised: 06/10/2013] [Accepted: 07/01/2013] [Indexed: 12/29/2022] Open
Abstract
Since its first official detection in the Guangdong province of China in 1996, the highly pathogenic avian influenza virus of H5N1 subtype (HPAI H5N1) has reportedly been the cause of outbreaks in birds in more than 60 countries, 24 of which were European. The main issue is still to develop effective antiviral drugs. In this case, single point mutation in the neuraminidase gene, which causes resistance to antiviral drug and is, therefore, subjected to many studies including ours, was observed. In this study, we developed magnetic electrochemical bar code array for detection of single point mutations (mismatches in up to four nucleotides) in H5N1 neuraminidase gene. Paramagnetic particles Dynabeads® with covalently bound oligo (dT)25 were used as a tool for isolation of complementary H5N1 chains (H5N1 Zhejin, China and Aichi). For detection of H5N1 chains, oligonucleotide chains of lengths of 12 (+5 adenine) or 28 (+5 adenine) bp labeled with quantum dots (CdS, ZnS and/or PbS) were used. Individual probes hybridized to target molecules specifically with efficiency higher than 60%. The obtained signals identified mutations present in the sequence. Suggested experimental procedure allows obtaining further information from the redox signals of nucleic acids. Moreover, the used biosensor exhibits sequence specificity and low limits of detection of subnanogram quantities of target nucleic acids.
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Affiliation(s)
- Ludmila Krejcova
- Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic; E-Mails: (L.K.); (D.H.); (P.K.); (M.A.M.R.); (V.A.); (L.T.)
| | - David Hynek
- Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic; E-Mails: (L.K.); (D.H.); (P.K.); (M.A.M.R.); (V.A.); (L.T.)
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic; E-Mails: (J.H.); (P.B.)
| | - Pavel Kopel
- Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic; E-Mails: (L.K.); (D.H.); (P.K.); (M.A.M.R.); (V.A.); (L.T.)
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic; E-Mails: (J.H.); (P.B.)
| | - Miguel Angel Merlos Rodrigo
- Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic; E-Mails: (L.K.); (D.H.); (P.K.); (M.A.M.R.); (V.A.); (L.T.)
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic; E-Mails: (J.H.); (P.B.)
| | - Vojtech Adam
- Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic; E-Mails: (L.K.); (D.H.); (P.K.); (M.A.M.R.); (V.A.); (L.T.)
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic; E-Mails: (J.H.); (P.B.)
| | - Jaromir Hubalek
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic; E-Mails: (J.H.); (P.B.)
- Department of Microelectronics, Faculty of Electrical Engineering and Communication, Brno University of Technology, Technicka 10, Brno CZ-616 00, Czech Republic
| | - Petr Babula
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic; E-Mails: (J.H.); (P.B.)
- Department of Natural Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Palackeho 1-3, Brno CZ-612 42, Czech Republic
| | - Libuse Trnkova
- Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic; E-Mails: (L.K.); (D.H.); (P.K.); (M.A.M.R.); (V.A.); (L.T.)
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic; E-Mails: (J.H.); (P.B.)
- Department of Chemistry, Faculty of Science, Masaryk University, Kotlarska 2, Brno CZ-611 37, Czech Republic
| | - Rene Kizek
- Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic; E-Mails: (L.K.); (D.H.); (P.K.); (M.A.M.R.); (V.A.); (L.T.)
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic; E-Mails: (J.H.); (P.B.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +420-545-133-350; Fax: +420-545-212-044
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Labib M, Berezovski MV. Electrochemical aptasensors for microbial and viral pathogens. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2013; 140:155-81. [PMID: 23917779 DOI: 10.1007/10_2013_229] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Aptamers are DNA and RNA oligonucleotides that can bind to a variety of nonnucleic acid targets with high affinity and specificity. Pathogen detection is a promising area in aptamer research. One of its major advantages is the ability of the aptamers to target and specifically differentiate microbial and viral strains without previous knowledge of the membrane-associated antigenic determinants or molecular biomarkers present in that particular microorganism. Electrochemical sensors emerged as a promising field in the area of aptamer research and pathogen detection. An electrochemical sensor is a device that combines a recognition element and an electrochemical transduction unit, where aptamers represent the latest addition to the large catalog of recognition elements. This chapter summarizes and evaluates recent developments of electrochemical aptamer-based sensors for microbial and viral pathogen detection, viability assessment of microorganisms, bacterial typing, identification of epitope-specific aptamers, affinity measurement between aptamers and their respective targets, and estimation of the degree of aptamer protection of oncolytic viruses for therapeutic purposes.
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Affiliation(s)
- Mahmoud Labib
- Department of Chemistry, University of Ottawa, 10 Marie Curie, Ottawa, ON K1N 6N5, Canada
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