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Lab-on-a-Chip Electrochemical Immunosensor Array Integrated with Microfluidics: Development and Characterisation. ELECTROCHEM 2022. [DOI: 10.3390/electrochem3040039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Lab-on-a-chip has recently become an alternative for in situ monitoring for its portability and simple integration with an electrochemical immunoassay. Here, we present an electrochemical cell-on-a-chip configured in a three-electrode system to detect benzo(a)pyrene (BaP) in water. 11-Mercaptoundecanoic acid (MUA), a self-assembled monolayer (SAM), was used to modify a gold chip surface to reduce the randomness of antibody binding. A carboxylic acid group was activated with -ethyl-3-(3-dimethylaminopropyl) (EDC) in combination with N-hyrodsuccinimide (NHS) before antibody immobilisation. The mechanism of the electrochemical reactions on a gold surface and SAM formation were investigated by cyclic voltammetry and contact angle measurements. The data revealed a lower contact angle in the modified chip and a scan rate of 50 mV/s. Through the addition of modification layers and thiol end groups to the SAM, our design allowed the chip surface to became more insulated. All were tested by amperometric detection using the developed Q-sense system. This novel technique detected multiple samples, and completed the analysis reasonably quickly. While the integrated system proved successful in a lab setting, the aim of the research is to use this system for in situ analysis, which can be brought into a water environment to carry out tests with existing processes. In this way, any issues that may arise from an environmental setting can be rectified in an efficient manner.
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Lu X, Ye Y, Zhang Y, Sun X. Current research progress of mammalian cell-based biosensors on the detection of foodborne pathogens and toxins. Crit Rev Food Sci Nutr 2020; 61:3819-3835. [PMID: 32885986 DOI: 10.1080/10408398.2020.1809341] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Foodborne diseases caused by pathogens and toxins are a serious threat to food safety and human health; thus, they are major concern to society. Existing conventional foodborne pathogen or toxin detection methods, including microbiological assay, nucleic acid-based assays, immunological assays, and instrumental analytical method, are time-consuming, labor-intensive and expensive. Because of the fast response and high sensitivity, cell-based biosensors are promising novel tools for food safety risk assessment and monitoring. This review focuses on the properties of mammalian cell-based biosensors and applications in the detection of foodborne pathogens (bacteria and viruses) and toxins (bacterial toxins, mycotoxins and marine toxins). We discuss mammalian cell adhesion and how it is involved in the establishment of 3D cell culture models for mammalian cell-based biosensors, as well as evaluate their limitations for commercialization and further development prospects.
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Affiliation(s)
- Xin Lu
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Research Center for Functional Food, Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, Jiangsu, PR China
| | - Yongli Ye
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Research Center for Functional Food, Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, Jiangsu, PR China
| | - Yinzhi Zhang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Research Center for Functional Food, Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, Jiangsu, PR China
| | - Xiulan Sun
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Research Center for Functional Food, Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, Jiangsu, PR China
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Felemban S, Vazquez P, Moore E. Future Trends for In Situ Monitoring of Polycyclic Aromatic Hydrocarbons in Water Sources: The Role of Immunosensing Techniques. BIOSENSORS-BASEL 2019; 9:bios9040142. [PMID: 31835623 PMCID: PMC6955691 DOI: 10.3390/bios9040142] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 12/02/2019] [Accepted: 12/05/2019] [Indexed: 12/18/2022]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are hazardous environmental pollutants found in water, soil, and air. Exposure to this family of chemicals presents a danger to human health, and as a result, it is imperative to design methods that are able to detect PAHs in the environment, thus improving the quality of drinking water and agricultural soils. This review presents emerging immunoassay techniques used for in situ detection of PAH in water samples and how they compare to common-place techniques. It will discuss their advantages and disadvantages and why it is required to find new solutions to analyze water samples. These techniques are effective in reducing detection times and complexity of measurements. Immunoassay methods presented here are able to provide in situ analysis of PAH concentrations in a water sample, which can be a great complement to existing laboratory techniques due to their real-time screening and portability for immunoassay techniques. The discussion shows in detail the most relevant state-of-the-art surface functionalization techniques used in the field of immunosensors, with the aim to improve PAH detection capabilities. Specifically, three surface functionalization techniques are key approaches to improve the detection of PAHs, namely, substrate surface reaction, layer-by-layer technique, and redox-active probes. These techniques have shown promising improvements in the detection of PAHs in water samples, since they show a wider linear range and high level of sensitivity compared to traditional PAH detection techniques. This review explores the various methods used in the detection of PAH in water environments. It provides extra knowledge to scientists on the possible solutions that can be used to save time and resources. The combination of the solutions presented here shows great promise in the development of portable solutions that will be able to analyze a sample in a matter of minutes on the field.
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Behera BK, Das A, Sarkar DJ, Weerathunge P, Parida PK, Das BK, Thavamani P, Ramanathan R, Bansal V. Polycyclic Aromatic Hydrocarbons (PAHs) in inland aquatic ecosystems: Perils and remedies through biosensors and bioremediation. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 241:212-233. [PMID: 29807281 DOI: 10.1016/j.envpol.2018.05.016] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 04/24/2018] [Accepted: 05/04/2018] [Indexed: 05/14/2023]
Abstract
Polycyclic Aromatic Hydrocarbons (PAHs) are among the most ubiquitous environmental pollutants of high global concern. PAHs belong to a diverse family of hydrocarbons with over one hundred compounds known, each containing at least two aromatic rings in their structure. Due to hydrophobic nature, PAHs tend to accumulate in the aquatic sediments, leading to bioaccumulation and elevated concentrations over time. In addition to their well-manifested mutagenic and carcinogenic effects in humans, they pose severe detrimental effects to aquatic life. The high eco-toxicity of PAHs has attracted a number of reviews, each dealing specifically with individual aspects of this global pollutant. However, efficient management of PAHs warrants a holistic approach that combines a thorough understanding of their physico-chemical properties, modes of environmental distribution and bioaccumulation, efficient detection, and bioremediation strategies. Currently, there is a lack of a comprehensive study that amalgamates all these aspects together. The current review, for the first time, overcomes this constraint, through providing a high level comprehensive understanding of the complexities faced during PAH management, while also recommending future directions through potentially viable solutions. Importantly, effective management of PAHs strongly relies upon reliable detection tools, which are currently non-existent, or at the very best inefficient, and therefore have a strong prospect of future development. Notably, the currently available biosensor technologies for PAH monitoring have not so far been compiled together, and therefore a significant focus of this article is on biosensor technologies that are critical for timely detection and efficient management of PAHs. This review is focussed on inland aquatic ecosystems with an emphasis on fish biodiversity, as fish remains a major source of food and livelihood for a large proportion of the global population. This thought provoking study is likely to instigate new collaborative approaches for protecting aquatic biodiversity from PAHs-induced eco-toxicity.
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Affiliation(s)
- Bijay Kumar Behera
- ICAR-Central Inland Fisheries Research Institute, Barrackpore, Kolkata 700120, India; Ian Potter NanoBioSensing Facility, NanoBiotechnology Research Laboratory, School of Science, RMIT University, Melbourne, VIC 3000, Australia.
| | - Abhishek Das
- ICAR-Central Inland Fisheries Research Institute, Barrackpore, Kolkata 700120, India
| | - Dhruba Jyoti Sarkar
- ICAR-Central Inland Fisheries Research Institute, Barrackpore, Kolkata 700120, India
| | - Pabudi Weerathunge
- Ian Potter NanoBioSensing Facility, NanoBiotechnology Research Laboratory, School of Science, RMIT University, Melbourne, VIC 3000, Australia
| | - Pranaya Kumar Parida
- ICAR-Central Inland Fisheries Research Institute, Barrackpore, Kolkata 700120, India
| | - Basanta Kumar Das
- ICAR-Central Inland Fisheries Research Institute, Barrackpore, Kolkata 700120, India
| | - Palanisami Thavamani
- Global Centre for Environmental Remediation (GCER), Faculty of Science and Information Technology, The University of Newcastle, Callaghan, NSW 2308, Australia
| | - Rajesh Ramanathan
- Ian Potter NanoBioSensing Facility, NanoBiotechnology Research Laboratory, School of Science, RMIT University, Melbourne, VIC 3000, Australia
| | - Vipul Bansal
- Ian Potter NanoBioSensing Facility, NanoBiotechnology Research Laboratory, School of Science, RMIT University, Melbourne, VIC 3000, Australia.
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Sun Y, Ban B, Bradbury A, Ansari GAS, Blake DA. Combining Yeast Display and Competitive FACS to Select Rare Hapten-Specific Clones from Recombinant Antibody Libraries. Anal Chem 2016; 88:9181-9. [PMID: 27571429 PMCID: PMC5032104 DOI: 10.1021/acs.analchem.6b02334] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
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The development of antibodies to
low molecular weight haptens remains
challenging due to both the low immunogenicity of many haptens and
the cross-reactivity of the protein carriers used to generate the
immune response. Recombinant antibodies and novel display technologies
have greatly advanced antibody development; however, new techniques
are still required to select rare hapten-specific antibodies from
large recombinant libraries. In the present study, we used a combination
of phage and yeast display to screen an immune antibody library (size,
4.4 × 106) against hapten markers for petroleum contamination
(phenanthrene and methylphenanthrenes). Selection via phage display
was used first to enrich the library between 20- and 100-fold for
clones that bound to phenanthrene–protein conjugates. The enriched
libraries were subsequently transferred to a yeast display system
and a newly developed competitive FACS procedure was employed to select
rare hapten-specific clones. Competitive FACS increased the frequency
of hapten-specific scFvs in our yeast-displayed scFvs from 0.025 to
0.005% in the original library to between 13 and 35% in selected pools.
The presence of hapten-specific scFvs was confirmed by competitive
ELISA using periplasmic protein. Three distinct antibody clones that
recognize phenanthrene and methylphenanthrenes were selected, and
their distinctive binding properties were characterized. To our knowledge,
these are first antibodies that can distinguish between methylated
(petrogenic) versus unmethylated (pyrogenic) phenanthrenes; such antibodies
will be useful in detecting the sources of environmental contamination.
This selection method could be generally adopted in the selection
of other hapten-specific recombinant antibodies.
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Affiliation(s)
- Yue Sun
- Department of Biochemistry and Molecular Biology, Tulane University School of Medicine , New Orleans, Louisiana, United States
| | - Bhupal Ban
- Department of Biochemistry and Molecular Biology, Tulane University School of Medicine , New Orleans, Louisiana, United States
| | - Andrew Bradbury
- Bioscience Division, Los Alamos National Laboratory , Los Alamos, New Mexico, United States
| | - G A Shakeel Ansari
- Department of Pathology, University of Texas Medical Branch , Galveston, Texas, United States
| | - Diane A Blake
- Department of Biochemistry and Molecular Biology, Tulane University School of Medicine , New Orleans, Louisiana, United States
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A novel sensitive cell-based Love Wave biosensor for marine toxin detection. Biosens Bioelectron 2016; 77:573-9. [DOI: 10.1016/j.bios.2015.07.062] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2015] [Revised: 07/22/2015] [Accepted: 07/27/2015] [Indexed: 02/02/2023]
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Zou L, Wu C, Wang Q, Zhou J, Su K, Li H, Hu N, Wang P. An improved sensitive assay for the detection of PSP toxins with neuroblastoma cell-based impedance biosensor. Biosens Bioelectron 2015; 67:458-64. [DOI: 10.1016/j.bios.2014.09.005] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Revised: 08/23/2014] [Accepted: 09/02/2014] [Indexed: 11/26/2022]
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Wujcik EK, Londoño NJ, Duirk SE, Monty CN, Masel RI. An acetylcholinesterase-inspired biomimetic toxicity sensor. CHEMOSPHERE 2013; 91:1176-82. [PMID: 23422169 DOI: 10.1016/j.chemosphere.2013.01.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2012] [Revised: 01/08/2013] [Accepted: 01/09/2013] [Indexed: 05/15/2023]
Abstract
This work demonstrates the ability of an acetylcholinesterase-inspired biomimetic sensor to accurately predict the toxicity of acetylcholinesterase (AChE) inhibitors. In surface waters used for municipal drinking water supplies, numerous pesticides and other anthropogenic chemicals have been found that inhibit AChE; however, there is currently no portable toxicity assay capable of determining the potential neurotoxicity of water samples and complex mixtures. Biological assays have been developed to determine the toxicity of unknown samples, but the short shelf-life of cells and other biological materials often make them undesirable for use in portable assays. Chemical methods and structure-activity-relationships, on the other hand, require prior knowledge on the compounds of interest that is often unavailable when analyzing environmental samples. In the toxicity assay presented here, the acetylcholinesterase enzyme has been replaced with 1-phenyl-1,2,3-butanetrione 2-oxime (PBO) a biomimetic compound that is structurally similar to the AChE active site. Using a biomimetic compound in place of the native enzyme allows for a longer shelf-life while maintaining the selective and kinetic ability of the enzyme itself. Previous work has shown the success of oxime-based sensors in the selective detection of AChE inhibitors and this work highlights the ability of an AChE-inspired biomimetic sensor to accurately predict the toxicity (LD50 and LC50) for a range of AChE inhibitors. The biomimetic assay shows strong linear correlations to LD50 (oral, rat) and LC50 (fish) values. Using a test set of eight AChE inhibitors, the biomimetic assay accurately predicted the LC50 value for 75% of the inhibitors within one order of magnitude.
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Affiliation(s)
- Evan K Wujcik
- Department of Chemical and Biomolecular Engineering, The University of Akron, Akron, OH 44325, United States
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Cho IH, Jeon JW, Paek SH, Kim DH, Shin HS, Ha UH, Seo SK, Paek SH. Toll-Like Receptor-Based Immuno-Analysis of Pathogenic Microorganisms. Anal Chem 2012; 84:9713-20. [DOI: 10.1021/ac300668y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Il-Hoon Cho
- Program for Bio-Microsystem Technology, 1, 5-ka, Anam-dong, Seongbuk-Gu, Seoul 136-701,
Korea
| | - Jin-Woo Jeon
- Program for Bio-Microsystem Technology, 1, 5-ka, Anam-dong, Seongbuk-Gu, Seoul 136-701,
Korea
| | - Sung-Ho Paek
- Program for Bio-Microsystem Technology, 1, 5-ka, Anam-dong, Seongbuk-Gu, Seoul 136-701,
Korea
| | - Dong-Hyung Kim
- Program for Bio-Microsystem Technology, 1, 5-ka, Anam-dong, Seongbuk-Gu, Seoul 136-701,
Korea
| | - Hee-Sung Shin
- Department of Biotechnology
and Bioinformatics, Korea University, 2511
Sejong-ro, Sejong 339-700, Korea
| | - Un-Hwan Ha
- Department of Biotechnology
and Bioinformatics, Korea University, 2511
Sejong-ro, Sejong 339-700, Korea
| | - Sung-Kyu Seo
- Department of Electronics and
Information Engineering, Korea University, Jochiwon, Chungnam 339-700, Korea
| | - Se-Hwan Paek
- Program for Bio-Microsystem Technology, 1, 5-ka, Anam-dong, Seongbuk-Gu, Seoul 136-701,
Korea
- Department of Biotechnology
and Bioinformatics, Korea University, 2511
Sejong-ro, Sejong 339-700, Korea
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Zhou L, Huang G, Wang S, Wu J, Lee WG, Chen Y, Xu F, Lu T. Advances in cell-based biosensors using three-dimensional cell-encapsulating hydrogels. Biotechnol J 2012; 6:1466-76. [PMID: 22162496 DOI: 10.1002/biot.201100098] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Cell-based biosensors (CBBs) have emerged as promising biotechnical tools whereby various cell types can be used as basic sensing units to detect external stimuli. Specifically, CBBs have been applied in environmental monitoring, drug screening, clinical diagnosis and biosecurity. For these applications, CBBs offer several advantages over conventional molecular-based biosensors or living animal-based approaches, such as the capability to better mimic physiological situations, to enhance detection specificity and sensitivity, and to detect unknown compounds and toxins. On the other hand, existing CBBs suffer from several limitations, such as weak cell-substrate attachment, two-dimensional (2D) cell microenvironment, and limited shelf life. An emerging method for scaffold-free three-dimensional (3D) cell culture uses hydrogels to encapsulate cells. Advances in novel biomaterials and nano/microscale technologies have enabled encapsulation of cells in hydrogels to fabricate 3D CBBs, which hold great potential for addressing the limitation in existing 2D CBBs. Here, we present an overview of the emerging hydrogel-based CBBs, their applications in pathogen/toxin detection, drug screening and screening of cell-biomaterials interaction, and the associated challenges and potential solutions.
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Affiliation(s)
- Lihong Zhou
- Biomedical Engineering and Biomechanics Center, Xi'an Jiaotong University, Xi'an, P R China
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Asphahani F, Thein M, Wang K, Wood D, Wong SS, Xu J, Zhang M. Real-time characterization of cytotoxicity using single-cell impedance monitoring. Analyst 2012; 137:3011-9. [PMID: 22498491 DOI: 10.1039/c2an16079j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Cellular impedance sensors have attracted great attention as a powerful characterization tool for real-time, label-free detection of cytotoxic agents. However, impedance measurements with conventional cell-based sensors that host multiple cells on a single electrode neither provide optimal cell signal sensitivity nor are capable of recording individual cell responses. Here we use a single-cell based platform to monitor cellular impedance on planar microelectrodes to characterize cellular death. In this study, individual cells were selectively patterned on microelectrodes with each hosting one live cell through ligand-mediated natural cell adhesion. Changes in cellular morphology and cell-electrode adherence were monitored after the patterned cells were treated with varying concentrations of hydrogen peroxide, sodium arsenite, and disodium hydrogen arsenate, three potent toxicants related to neurotoxicity and oxidative stress. At low toxicant concentrations, impedance waveforms acquired from individual cells showed variable responses. A time- and concentration-dependent response was seen in the averaged single-cell impedance waveform for all three toxicants. The apoptosis and necrosis characterizations were performed to validate cell impedance results. Furthermore, time constants of apoptosis and necrosis in response to toxicant exposure were analytically established using an equivalent circuit model that characterized the mechanisms of cell death.
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Affiliation(s)
- Fareid Asphahani
- Department of Materials Science & Engineering, University of Washington, Seattle, Washington 98195-2120, USA
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12
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Application of screen-printed microband biosensors incorporated with cells to monitor metabolic effects of potential environmental toxins. Mikrochim Acta 2010. [DOI: 10.1007/s00604-010-0326-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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