1
|
Muhsin SA, Abdullah A, kobashigawa E, Al-Amidie M, Russell S, Zhang MZ, Zhang S, Almasri M. A microfluidic biosensor for the diagnosis of chronic wasting disease. MICROSYSTEMS & NANOENGINEERING 2023; 9:104. [PMID: 37609007 PMCID: PMC10440343 DOI: 10.1038/s41378-023-00569-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 06/01/2023] [Accepted: 06/21/2023] [Indexed: 08/24/2023]
Abstract
Cervids are affected by a neurologic disease that is always fatal to individuals and has population effects. This disease is called chronic wasting disease (CWD) and is caused by a misfolded prion protein. The disease is transmitted via contact with contaminated body fluids and tissue or exposure to the environment, such as drinking water or food. Current CWD diagnosis depends on ELISA screening of cervid lymph nodes and subsequent immunohistochemistry (IHC) confirmation of ELISA-positive results. The disease has proven to be difficult to control in part because of sensitivity and specificity issues with the current test regimen. We have investigated an accurate, rapid, and low-cost microfluidic microelectromechanical system (MEMS) biosensing device for the detection of CWD pathologic prions in retropharyngeal lymph nodes (RLNs), which is the current standard type of CWD diagnostic sample. The device consists of three novel regions for concentrating, trapping, and detecting the prion. The detection region includes an array of electrodes coated with a monoclonal antibody against pathologic prions. The experimental conditions were optimized using an engineered prion control antigen. Testing could be completed in less than 1 hour with high sensitivity and selectivity. The biosensor detected the engineered prion antigen at a 1:24 dilution, while ELISA detected the same antigen at a 1:8 dilution. The relative limit of detection (rLOD) of the biosensor was a 1:1000 dilution of a known strong positive RLN sample, whereas ELISA showed a rLOD of 1:100 dilution. Thus, the biosensor was 10 times more sensitive than ELISA, which is the currently approved CWD diagnostic test. The biosensor's specificity and selectivity were confirmed using known negative RPLN samples, a negative control antibody (monoclonal antibody against bovine coronavirus BCV), and two negative control antigens (bluetongue virus and Epizootic hemorrhagic disease virus). The biosensor's ability to detect pathogenic prions was verified by testing proteinase-digested positive RLN samples.
Collapse
Affiliation(s)
- Sura A. Muhsin
- University of Missouri–Columbia, Electrical Engineering and Computer Science, Columbia, MO USA
| | - Amjed Abdullah
- University of Missouri–Columbia, Electrical Engineering and Computer Science, Columbia, MO USA
| | - Estela kobashigawa
- University of Missouri–Columbia, College of Veterinary Medicine, Veterinary Medical Diagnostic Laboratory, Columbia, MO USA
| | - Muthana Al-Amidie
- University of Missouri–Columbia, Electrical Engineering and Computer Science, Columbia, MO USA
| | | | - Michael Z. Zhang
- University of Missouri–Columbia, College of Veterinary Medicine, Veterinary Medical Diagnostic Laboratory, Columbia, MO USA
| | - Shuping Zhang
- University of Missouri–Columbia, College of Veterinary Medicine, Veterinary Medical Diagnostic Laboratory, Columbia, MO USA
| | - Mahmoud Almasri
- University of Missouri–Columbia, Electrical Engineering and Computer Science, Columbia, MO USA
| |
Collapse
|
2
|
Malla P, Liao HP, Liu CH, Wu WC. Electrochemical immunoassay for serum parathyroid hormone using screen-printed carbon electrode and magnetic beads. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115463] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
3
|
Jia XX, Li S, Han DP, Chen RP, Yao ZY, Ning BA, Gao ZX, Fan ZC. Development and perspectives of rapid detection technology in food and environment. Crit Rev Food Sci Nutr 2021; 62:4706-4725. [PMID: 33523717 DOI: 10.1080/10408398.2021.1878101] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Food safety become a hot issue currently with globalization of food trade and food supply chains. Chemical pollution, microbial contamination and adulteration in food have attracted more attention worldwide. Contamination with antibiotics, estrogens and heavy metals in water environment and soil environment have also turn into an enormous threat to food safety. Traditional small-scale, long-term detection technologies have been unable to meet the current needs. In the monitoring process, rapid, convenient, accurate analysis and detection technologies have become the future development trend. We critically synthesizing the current knowledge of various rapid detection technology, and briefly touched upon the problem which still exist in research process. The review showed that the application of novel materials promotes the development of rapid detection technology, high-throughput and portability would be popular study directions in the future. Of course, the ultimate aim of the research is how to industrialization these technologies and apply to the market.
Collapse
Affiliation(s)
- Xue-Xia Jia
- Institute of Environmental and Operational Medicine, Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin, P.R. China.,State Key Laboratory of Food Nutrition and Safety, China International Scientific & Technological Cooperation Base for Health Biotechnology, College of Food Engineering and Biotechnology, Tianjin University of Science & Technology, Tianjin, P.R. China
| | - Shuang Li
- Institute of Environmental and Operational Medicine, Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin, P.R. China
| | - Dian-Peng Han
- Institute of Environmental and Operational Medicine, Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin, P.R. China
| | - Rui-Peng Chen
- Institute of Environmental and Operational Medicine, Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin, P.R. China
| | - Zi-Yi Yao
- Institute of Environmental and Operational Medicine, Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin, P.R. China
| | - Bao-An Ning
- Institute of Environmental and Operational Medicine, Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin, P.R. China
| | - Zhi-Xian Gao
- Institute of Environmental and Operational Medicine, Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin, P.R. China
| | - Zhen-Chuan Fan
- State Key Laboratory of Food Nutrition and Safety, China International Scientific & Technological Cooperation Base for Health Biotechnology, College of Food Engineering and Biotechnology, Tianjin University of Science & Technology, Tianjin, P.R. China
| |
Collapse
|
4
|
Abstract
There is an increasing interest for low cost, ultrasensitive, time saving yet reliable, point-of-care bioelectronic sensors. Electrolyte gated organic field effect transistors (EGOFETs) are proven compelling transducers for various sensing applications, offering direct electronic, label-free transduction of bio-recognition events along with miniaturization, fast data handling and processing. Given that field effect transistors act as intrinsically signal amplifiers, even a small change of a chemical or biological quantity may significantly alter the output electronic signal. In EGOFETs selectivity can be guaranteed by the immobilization of bioreceptors able to bind specifically a target analyte. The layer of receptors can be linked to one of the electronic active interfaces of the transistor, and the interactions with a target molecule affect the electronic properties of the device. The present chapter discusses main aspects of EGOFETs transducers along with detailed examples of how to tailor the device interfaces with desired functionality. The development of an "electronic tongue" based on an EGOFET device coupled to odorant binding proteins (OBPs) for enantiomers differentiation is presented.
Collapse
|
5
|
Design of 3D Structure Membrane for the Increased Sensitivity in Enzyme Linked Immunosorbent Assay (mELISA). APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9194171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The Enzyme Linked Immunosorbent Assay (ELISA) technique has been widely used for the identification and quantification of biochemical markers. The typical ELISA requires a number of washing steps to eliminate the unbound proteins which sometimes cause the desorption of protein due to their weak bonding between protein and well plate. In this study, we have developed a meshed type of plastic membrane in order to increase the reliable binding efficiency between proteins and the membrane surface, and to provide easy steps of washing. The use of our developed solid membrane has significantly increased the binding capacity of the biomolecules because this membrane ELISA (mELISA) provides 3D binding surfaces which increases the surface area when compared to the conventional 2D surface well plate. The columns were pretreated to form a self-assembled layer (SAM) on the surface for the stable conjugation of a target antibody. The SAM-coated membranes could be stored for one month without any further deterioration of stability. The measured optical density (O.D.) shows a 1.2-fold increase in IgG antigen (25 μg/mL) from the plastic membrane as compared with the conventional ELISA method. The concentrations of thyroid stimulating hormone were also monitored using the mELISA method and it shows good linearity against the concentrations.
Collapse
|
6
|
Abstract
Crosslinking of proteins for their irreversible immobilization on surfaces is a proven and popular method. However, many protocols lead to random orientation and the formation of undefined or even inactive by-products. Most concepts to obtain a more targeted conjugation or immobilization requires the recombinant modification of at least one binding partner, which is often impractical or prohibitively expensive. Here a novel method is presented, which is based on the chemical preactivation of Protein A or G with selected conventional crosslinkers. In a second step, the antibody is added, which is subsequently crosslinked in the Fc part. This leads to an oriented and covalent immobilization of the immunoglobulin with a very high yield. Protocols for Protein A and Protein G with murine and human IgG are presented. This method may be useful for the preparation of columns for affinity chromatography, immunoprecipitation, antibodies conjugated to magnetic particles, permanent and oriented immobilization of antibodies in biosensor systems, microarrays, microtitration plates or any other system, where the loss of antibodies needs to be avoided, and maximum binding capacity is desired. This method is directly applicable even to antibodies in crude cell culture supernatants, raw sera or protein-stabilized antibody preparations without any purification nor enrichment of the IgG. This new method delivered much higher signals as a traditional method and, hence, seems to be preferable in many applications.
Collapse
|
7
|
Abbasian F, Ghafar-Zadeh E, Magierowski S. Microbiological Sensing Technologies: A Review. Bioengineering (Basel) 2018; 5:E20. [PMID: 29498670 PMCID: PMC5874886 DOI: 10.3390/bioengineering5010020] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 02/23/2018] [Accepted: 02/23/2018] [Indexed: 12/13/2022] Open
Abstract
Microorganisms have a significant influence on human activities and health, and consequently, there is high demand to develop automated, sensitive, and rapid methods for their detection. These methods might be applicable for clinical, industrial, and environmental applications. Although different techniques have been suggested and employed for the detection of microorganisms, and the majority of these methods are not cost effective and suffer from low sensitivity and low specificity, especially in mixed samples. This paper presents a comprehensive review of microbiological techniques and associated challenges for bioengineering researchers with an engineering background. Also, this paper reports on recent technological advances and their future prospects for a variety of microbiological applications.
Collapse
Affiliation(s)
- Firouz Abbasian
- Biologically Inspired Sensors and Actuators Laboratory, Department of EECS, Lassonde School of Engineering, York University, Toronto, ON M3J 1P3, Canada.
| | - Ebrahim Ghafar-Zadeh
- Biologically Inspired Sensors and Actuators Laboratory, Department of EECS, Lassonde School of Engineering, York University, Toronto, ON M3J 1P3, Canada.
| | - Sebastian Magierowski
- Biologically Inspired Sensors and Actuators Laboratory, Department of EECS, Lassonde School of Engineering, York University, Toronto, ON M3J 1P3, Canada.
| |
Collapse
|
8
|
Kabay G, Kaleli Can G, Mutlu M. Amyloid-like protein nanofibrous membranes as a sensing layer infrastructure for the design of mass-sensitive biosensors. Biosens Bioelectron 2017; 97:285-291. [PMID: 28618364 DOI: 10.1016/j.bios.2017.06.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 06/01/2017] [Accepted: 06/08/2017] [Indexed: 11/17/2022]
Abstract
Quartz crystal microbalances (QCMs) have been used in the literature for mass sensitive biosensor applications. However, their performance, reliability and stability have been limited by the chemical treatment steps required for the functionalization and activation of the QCM surface, prior to antibody immobilization. Specifically, these steps cause increased film thickness, which diminishes performance by mass overload, and create a harsh environment, which reduces biological activity. In this work, we eliminated this chemical step by introducing a sensing layer modification using electrospun amyloid like-bovine serum albumin (AL-BSA) nanofibers on QCM surfaces. Owing to the self-functionality of AL-BSA nanofibers, these modified QCM surfaces were directly activated by glutaraldehyde (GA). To assess the performance of these modified electrodes, a model protein, lysozyme (Lys), was selected as the biological agent to be immobilized. Frequency measurements were performed in batch (dip-and-dry) and continuous (flow-cell) processes, and binding performances were compared. AL-BSA modified surfaces were characterized by X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), quartz crystal microbalance (QCM), contact angle (CA) and attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR). Protein detection was measured based on the frequency shift before and after the covalent bonding of Lys. Under optimized conditions, the proposed immobilization platforms could bind 335ng/mL and 250ng/mL of Lys for batch and continuous processes, respectively. Our results demonstrate the potential usage of these self-functional electrospun AL-BSA infrastructure sensing layers on QCM surfaces. This modification enables the direct immobilization of bioactive agents by eliminating any surface functionalization process for further mass-sensitive biosensor applications.
Collapse
Affiliation(s)
- Gözde Kabay
- Plasma Aided Biomedical Research Group (pabmed), Biomedical Engineering Division, Graduate School of Science and Technology, TOBB University of Economics and Technology, Ankara 06560, Turkey
| | - Gizem Kaleli Can
- Plasma Aided Biomedical Research Group (pabmed), Biomedical Engineering Division, Graduate School of Science and Technology, TOBB University of Economics and Technology, Ankara 06560, Turkey
| | - Mehmet Mutlu
- Plasma Aided Biomedical Research Group (pabmed), Biomedical Engineering Division, Graduate School of Science and Technology, TOBB University of Economics and Technology, Ankara 06560, Turkey; Plasma Aided Biomedical Research Group (pabmed), Department of Biomedical Engineering, TOBB University of Economics and Technology, Ankara 06560, Turkey.
| |
Collapse
|
9
|
Eltzov E, Marks RS. Miniaturized Flow Stacked Immunoassay for Detecting Escherichia coli in a Single Step. Anal Chem 2016; 88:6441-9. [PMID: 27218705 DOI: 10.1021/acs.analchem.6b01034] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Commercially available systems that provide cost-effective, fast, simple, and portable solutions for health and environmental applications are few despite advancements in bioassays and biosensor research. We have developed a new system based on stacked membranes, each layer with a specific function. Samples were added onto the bottom-most layer, and as each layer becomes wet, the analyte pushes through to the next membrane layers. During migration, the analyte attaches with the corresponding antibody, itself conjugated with horseradish peroxidase (HRP) to produce a measurable signal. To prevent false positive results, blocking layer membranes are added to stop unbound antibodies from reaching the top membrane. Thus, only analyte/antibody-HRP complex will generate a signal. In order to prove this concept, Escherichia coli was used as the target analyte. After optimization, our immunoassay sensitivity was adjusted to 100 cells mL(-1). Different environmental water sources were also tested to demonstrate the sensitivity and specificity of our proposed stacked bioassay. Simplicity, low price, sensitivity, and modularity (capability to change to any target analyte) make this idea very promising for future commercialization.
Collapse
Affiliation(s)
- Evgeni Eltzov
- School of Material Science and Engineering, Nanyang Technology University , Nanyang Avenue, 639798, Singapore
| | - Robert S Marks
- School of Material Science and Engineering, Nanyang Technology University , Nanyang Avenue, 639798, Singapore
| |
Collapse
|
10
|
Jepsen ML, Harmsen C, Godbole AA, Nagaraja V, Knudsen BR, Ho YP. Specific detection of the cleavage activity of mycobacterial enzymes using a quantum dot based DNA nanosensor. NANOSCALE 2016; 8:358-364. [PMID: 26616006 DOI: 10.1039/c5nr06326d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We present a quantum dot based DNA nanosensor specifically targeting the cleavage step in the reaction cycle of the essential DNA-modifying enzyme, mycobacterial topoisomerase I. The design takes advantages of the unique photophysical properties of quantum dots to generate visible fluorescence recovery upon specific cleavage by mycobacterial topoisomerase I. This report, for the first time, demonstrates the possibility to quantify the cleavage activity of the mycobacterial enzyme without the pre-processing sample purification or post-processing signal amplification. The cleavage induced signal response has also proven reliable in biological matrices, such as whole cell extracts prepared from Escherichia coli and human Caco-2 cells. It is expected that the assay may contribute to the clinical diagnostics of bacterial diseases, as well as the evaluation of treatment outcomes.
Collapse
Affiliation(s)
- Morten Leth Jepsen
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Aarhus 8000 C, Denmark. and Department of Molecular Biology and Genetics, Aarhus University, Aarhus 8000 C, Denmark
| | - Charlotte Harmsen
- Department of Molecular Biology and Genetics, Aarhus University, Aarhus 8000 C, Denmark
| | - Adwait Anand Godbole
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore 560 012, India
| | - Valakunja Nagaraja
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore 560 012, India
| | - Birgitta R Knudsen
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Aarhus 8000 C, Denmark. and Department of Molecular Biology and Genetics, Aarhus University, Aarhus 8000 C, Denmark
| | - Yi-Ping Ho
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Aarhus 8000 C, Denmark. and Department of Molecular Biology and Genetics, Aarhus University, Aarhus 8000 C, Denmark
| |
Collapse
|
11
|
Li H, Bai X, Wang N, Chen X, Li J, Zhang Z, Tang J. Aptamer-based microcantilever biosensor for ultrasensitive detection of tumor marker nucleolin. Talanta 2016; 146:727-31. [PMID: 26695322 DOI: 10.1016/j.talanta.2015.06.034] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Revised: 06/09/2015] [Accepted: 06/13/2015] [Indexed: 10/23/2022]
Abstract
We present an aptamer-based microcantilever biosensor for label-free detection of nucleolin. The sensor cantilevers in the microcantilever array were functionalized with nucleolin aptamer (AS1411) while the reference cantilevers were modified by 6-mercapto-1-hexanol (MCH) to eliminate environmental disturbances. The interaction between nucleolin and AS1411 induced surface stress changes, resulting in a differential deflection between sensor and reference cantilevers. The amplitude of differential cantilever deflection had a good linear relationship with the nucleolin concentration ranging from 10 nM to 250 nM with a correlation coefficient of 0.999. The detection limit was about 1.0 nM, at a signal-to-noise ratio of 3. The aptamer-based microcantilever sensor demonstrated good selectivity and was facile, rapid, and reagentless. Our results show the potential for the application of microcantilever biosensor system as a powerful tool to detect tumor markers with high sensitivity and specificity.
Collapse
Affiliation(s)
- Huiyan Li
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China; School of Public Health, Jilin University, Changchun 130021, PR China
| | - Xiaojing Bai
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Nan Wang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Xuejuan Chen
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Jing Li
- School of Public Health, Jilin University, Changchun 130021, PR China
| | - Zhe Zhang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Jilin Tang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China.
| |
Collapse
|
12
|
Simple and sensitive electrochemical impedimetric approach towards analysis of biophysical interaction. Biochem Biophys Res Commun 2015; 465:471-5. [DOI: 10.1016/j.bbrc.2015.08.041] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 08/09/2015] [Indexed: 01/19/2023]
|
13
|
Lin HY, Huang CH, Hsieh WH, Liu LH, Lin YC, Chu CC, Wang ST, Kuo IT, Chau LK, Yang CY. On-line SERS detection of single bacterium using novel SERS nanoprobes and a microfluidic dielectrophoresis device. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:4700-10. [PMID: 25115777 DOI: 10.1002/smll.201401526] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Revised: 07/12/2014] [Indexed: 05/12/2023]
Abstract
The integration of novel surface-enhanced Raman scattering (SERS) nanoprobes and a microfluidic dielectrophoresis (DEP) device is developed for rapid on-line SERS detection of Salmonella enterica serotype Choleraesuis and Neisseria lactamica. The SERS nanoprobes are prepared by immobilization of specific antibody onto the surface of nanoaggregate-embedded beads (NAEBs), which are silica-coated, dye-induced aggregates of a small number of gold nanoparticles (AuNPs). Each NAEB gives highly enhanced Raman signals owing to the presence of well-defined plasmonic hot spots at junctions between AuNPs. Herein, the on-line SERS detection and accurate identification of suspended bacteria with a detection capability down to a single bacterium has been realized by the NAEB-DEP-Raman spectroscopy biosensing strategy. The practical detection limit with a measurement time of 10 min is estimated to be 70 CFU mL(-1) . In comparison with whole-cell enzyme-linked immunosorbent assay (ELISA), the SERS-nanoprobe-based biosensing method provides advantages of higher sensitivity and requiring lower amount of antibody in the assay (100-fold less). The total assay time including sample pretreatment is less than 2 h. Hence, this sensing strategy is promising for faster and effective on-line multiplex detection of single pathogenic bacterium by using different bioconjugated SERS nanoprobes.
Collapse
Affiliation(s)
- Hsing-Ying Lin
- Department of Chemistry and Biochemistry and Center for Nano Bio-Detection (AIM-HI), National Chung Cheng University, Chiayi, 62102, Taiwan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
14
|
Introducing a new method for evaluation of the interaction between an antigen and an antibody: Single frequency impedance analysis for biosensing systems. Talanta 2014; 125:7-13. [DOI: 10.1016/j.talanta.2014.02.067] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2013] [Revised: 02/20/2014] [Accepted: 02/25/2014] [Indexed: 11/22/2022]
|
15
|
Szalontai H, Adányi N, Kiss A. Comparative determination of two probiotics by QCM and OWLS-based immunosensors. N Biotechnol 2014; 31:395-401. [PMID: 24768869 DOI: 10.1016/j.nbt.2014.04.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Revised: 01/17/2014] [Accepted: 04/10/2014] [Indexed: 10/25/2022]
Abstract
The regular consumption of foods containing probiotic bacteria has beneficial physiological effects on the health and the digestion system. There is a need for novel analytical approaches for the determination of these bacteria that are faster than the classical plate counting method. For this purpose, two label-free biosensors were investigated and presented in this paper: Quartz Crystal Microbalance (QCM) and Optical Waveguide Lightmode Spectroscopy (OWLS) based direct immunosensors were developed for real-time direct detection of probiotic bacteria in fermented dairy products. Bifidobacterium bifidum O1356 and Lactobacillus acidophilus O1132 were detected by polyclonal anti-B. bifidum IgG and anti-L. acidophilus IgG immobilized on the sensors' surface. Sulfo-LC-SPDP cross linking agent was used to bind antibodies to the gold surface of the QCM's AT-cut quartz wafer. Concerning OWLS, antibodies were covalently bound to the amino groups of the silanized surface of the waveguide by glutaraldehyde. The dynamic measuring range was found between 1.0E+3 and 5.0E+5CFUmL(-1) in 100 fold diluted fermented milk products by QCM and with OWLS. Considering the current legislation of the probiotic content in probiotic products, the two developed immunosensors can be applied for rapid quantification of L. acidophilus and B. bifidum in fermented milk. These examinations offer effective alternatives to the microbiological plate counting method.
Collapse
Affiliation(s)
- Helga Szalontai
- Eszterházy Károly College, Institute of Food Science, Leányka u. 6., Eger H-3300, Hungary.
| | - Nóra Adányi
- Central Environmental and Food Science Research Institute, Herman Ottó u. 15., Budapest H-1022, Hungary
| | - Attila Kiss
- Eszterházy Károly College, Institute of Food Science, Leányka u. 6., Eger H-3300, Hungary
| |
Collapse
|
16
|
Amperometric immunosensor of Brucella abortus CE-protein antigen shows post-zone phenomena. J Electroanal Chem (Lausanne) 2014. [DOI: 10.1016/j.jelechem.2013.12.029] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
17
|
Cho H, Zook J, Banner T, Park SH, Min BH, Hasty KA, Pinkhassik E, Lindner E. Immobilization of fibrinogen antibody on self-assembled gold monolayers for immunosensor applications. Tissue Eng Regen Med 2014. [DOI: 10.1007/s13770-013-1119-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
|
18
|
Wang J, McIvor MJ, Elliott CT, Karoonuthaisiri N, Segatori L, Biswal SL. Rapid Detection of Pathogenic Bacteria and Screening of Phage-Derived Peptides Using Microcantilevers. Anal Chem 2014; 86:1671-8. [DOI: 10.1021/ac403437x] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jinghui Wang
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
| | - Mary Josephine McIvor
- Institute for
Global Food Security, School of Biological Sciences, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, Northern Ireland, United Kingdom
| | - Christopher T. Elliott
- Institute for
Global Food Security, School of Biological Sciences, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, Northern Ireland, United Kingdom
| | - Nitsara Karoonuthaisiri
- Institute for
Global Food Security, School of Biological Sciences, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, Northern Ireland, United Kingdom
- Microarray Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), 113 Thailand Science Park, Phahonyothin Road, Pathumthani 12120, Thailand
| | - Laura Segatori
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
| | - Sibani Lisa Biswal
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
| |
Collapse
|
19
|
Quartz Crystal Microbalance with Dissipation (QCM-D) studies of the viscoelastic response from a continuously growing grafted polyelectrolyte layer. J Colloid Interface Sci 2013; 408:229-34. [DOI: 10.1016/j.jcis.2013.07.008] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Revised: 07/01/2013] [Accepted: 07/02/2013] [Indexed: 11/18/2022]
|
20
|
Salam F, Uludag Y, Tothill IE. Real-time and sensitive detection of Salmonella Typhimurium using an automated quartz crystal microbalance (QCM) instrument with nanoparticles amplification. Talanta 2013; 115:761-7. [PMID: 24054660 DOI: 10.1016/j.talanta.2013.06.034] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Revised: 06/19/2013] [Accepted: 06/21/2013] [Indexed: 10/26/2022]
Abstract
The accidental contamination of Salmonella in raw and processed foods is a major problem for the food industry worldwide. At present many of the currently used methods for Salmonella detection are time and labour intensive. Therefore, rapid detection is a key to the prevention and identification of problems related to health and safety. This paper describes the application of a new quartz crystal microbalance (QCM) instrument with a microfluidic system for the rapid and real time detection of Salmonella Typhimurim. The QCMA-1 bare gold sensor chip which contain two sensing array was modified by covalently immobilising the monoclonal capture antibody on the active spot and a mouse IgG antibody on the control spot using a conventional amine coupling chemistry (EDC-NHS). The binding of the Salmonella cells onto the immobilised anti-Salmonella antibody alters the sensor frequency which was correlated to cells concentration in the buffer samples. Salmonella cells were detected using direct, sandwich, and sandwich assay with antibody conjugated gold-nanoparticles. The performance of the QCM immunosensor developed with gold-nanoparticles gave the highest sensitivity with a limit of detection (LOD) ~10-20 colony forming unit (CFU) ml(-1) compared to direct and sandwich assay (1.83 × 10(2) CFU ml(-1) and 1.01 × 10(2) CFU ml(-1), respectively). The sensor showed good sensitivity and selectivity for Salmonella in the presence of other bacteria in real food samples and helped in reducing the pre-enrichment step, hence, demonstrating the potential of this technology for the rapid and sensitive microbial analysis.
Collapse
Affiliation(s)
- Faridah Salam
- Cranfield Health, Cranfield University, Cranfield, Bedfordshire, MK43 0AL England, United Kingdom
| | | | | |
Collapse
|
21
|
Szalontai H, Adányi N, Kiss A. Development of Piezoelectric Immunosensor for the Detection of Probiotic Bacteria. ANAL LETT 2012. [DOI: 10.1080/00032719.2012.673095] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
22
|
Park MK, Oh JH. Rapid detection of E. coli O157:H7 on turnip greens using a modified gold biosensor combined with light microscopic imaging system. J Food Sci 2012; 77:M127-34. [PMID: 22251215 DOI: 10.1111/j.1750-3841.2011.02537.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This research aims to demonstrate the feasibility of a modified gold biosensor to detect E. coli O157:H7 in leafy turnip greens. The gold biosensor was modified with dithiobis-succinimidyl propionate (DSP) and/or protein A or G. The gold biosensor modified with DSP (Gold-DSP) was combined with a light microscopic imaging system (LMIS). The optimal concentration and specificity of anti-E. coli O15 polyclonal antibodies (pAbs) on the biosensor were determined. The reliability of Gold-DSP biosensor was investigated by determining the sensitivity, specificity, and limit of detection (LOD) of the Gold-DSP combined with LMIS. The Gold-DSP combined with LMIS was applied to turnip greens for E. coli O157:H7 detection. The modification of Gold biosensor with DSP significantly increased the detected number of E. coli O157:H7. The specificity of pAbs was sufficient to react with target E. coli O157:H7 among the tested bacterial culture. The optimum concentration of pAbs was determined as 200 μg/mL. The sensitivity, specificity, and LOD of Gold-DSP combined with LMIS were determined as 100%, 90%, and 10(3) CFU/25 mm(2) , respectively. When applied to turnip greens, the Gold-DSP combined with LMIS could detect 2641 ± 394 and 15383 ± 3853 cell/mm(2) with the initial concentrations of 10(1) and 10(2) CFU/25 g turnip greens, respectively, after 10 h-enrichment. Overall, this research suggested that the Gold-DSP combined with LMIS could be used to detect E. coli O157:H7 on turnip greens qualitatively and quantitatively.
Collapse
Affiliation(s)
- Mi-Kyung Park
- Materials Research and Education Center, Auburn Univ, 275 Wilmore Labs, Auburn, AL 36830, USA
| | | |
Collapse
|
23
|
Identification, isolation, characterization, and banking of human dental pulp stem cells. Methods Mol Biol 2012; 879:443-63. [PMID: 22610575 DOI: 10.1007/978-1-61779-815-3_26] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Dental pulp stem cells (DPSCs) can be found within the "cell rich zone" of the dental pulp. Their embryonic origin, from neural crests, explains their multipotency. Up to now, it has been demonstrated that these cells are capable of producing bone tissue, both in vitro and in vivo, as well as a simil-dentin tissue, in vitro. In addition, it has been reported that these cells differentiate into adipocytes, endotheliocytes, melanocytes, neurons, and glial cells and can be easily cryopreserved and stored for long periods of time and retain their multipotency and bone-producing capacity. Moreover, recent attention has been focused on tissue engineering and on the properties of these cells: several scaffolds have been used to promote 3D tissue formation and studies have demonstrated that DPSCs show good adherence and bone tissue formation on microconcavity surface textures. In addition, adult bone tissue with good vascularization has been obtained in grafts. Interestingly, they seem to possess immunoprivileges as they can be grafted into allogenic tissues and seem to exert anti-inflammatory abilities, like many other mesenchymal stem cells. Their recent use in clinical trials for bone repair enforces the notion that DPSCs can be used successfully in patients. Therefore, their isolation, selection, differentiation, and banking are of great importance. The isolation technique used in most laboratories is based on the use of flow cytometry with cell sorter termed FACS (fluorescent activated cell sorter). It is now important to obtain new methods/protocols to select and isolate stem cells without staining by fluorescent markers or use of magnetic beads. These new procedures should be based on biophysical differences among the different cell populations in order to obtain interesting peculiarities for implementation in biomedical/clinical laboratories. It is emphasized that the new methods must address simplicity and short times of preparation and use of samples, complete sterility of cells, the potential disposable, low cost and complete maintenance of the viability, and integrity of the cells with real-time response for subsequent applications in the biomedical/clinical/surgical fields.
Collapse
|
24
|
Matharu Z, Bandodkar AJ, Gupta V, Malhotra BD. Fundamentals and application of ordered molecular assemblies to affinity biosensing. Chem Soc Rev 2012; 41:1363-402. [DOI: 10.1039/c1cs15145b] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
25
|
Cheng CI, Chang YP, Chu YH. Biomolecular interactions and tools for their recognition: focus on the quartz crystal microbalance and its diverse surface chemistries and applications. Chem Soc Rev 2012; 41:1947-71. [DOI: 10.1039/c1cs15168a] [Citation(s) in RCA: 170] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
26
|
Ciani I, Schulze H, Corrigan DK, Henihan G, Giraud G, Terry JG, Walton AJ, Pethig R, Ghazal P, Crain J, Campbell CJ, Bachmann TT, Mount AR. Development of immunosensors for direct detection of three wound infection biomarkers at point of care using electrochemical impedance spectroscopy. Biosens Bioelectron 2011; 31:413-8. [PMID: 22137369 DOI: 10.1016/j.bios.2011.11.004] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2011] [Revised: 10/19/2011] [Accepted: 11/04/2011] [Indexed: 01/13/2023]
Abstract
A method for label-free, electrochemical impedance immunosensing for the detection and quantification of three infection biomarkers in both buffer and directly in the defined model matrix of mock wound fluid is demonstrated. Triggering Receptor-1 Expressed on Myeloid cells (TREM-1) and Matrix MetalloPeptidase 9 (MMP-9) are detected via direct assay and N-3-oxo-dodecanoyl-l-HomoSerineLactone (HSL), relevant in bacterial quorum sensing, is detected using a competition assay. Detection is performed with gold screen-printed electrodes modified with a specific thiolated antibody. Detection is achieved in less than 1h straight from mock wound fluid without any extensive sample preparation steps. The limits of detection of 3.3 pM for TREM-1, 1.1 nM for MMP-9 and 1.4 nM for HSL are either near or below the threshold required to indicate infection. A relatively large dynamic range for sensor response is also found, consistent with interaction between neighbouring antibody-antigen complexes in the close-packed surface layer. Together, these three novel electrochemical immunosensors demonstrate viable multi-parameter sensing with the required sensitivity for rapid wound infection detection directly from a clinically relevant specimen.
Collapse
Affiliation(s)
- Ilenia Ciani
- School of Chemistry & EaStCHEM, The University of Edinburgh, Joseph Black Building, King's Buildings, West Mains Road, Edinburgh EH9 3JJ, UK
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Chou HC, Yan TR. Applying the Quartz Crystal Microbalance Technique to Detect the Epithelial Cell Tight Junction Integrality of Caco-2 Cells. ANAL LETT 2010. [DOI: 10.1080/00032711003698713] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
28
|
Escamilla-Gómez V, Campuzano S, Pedrero M, Pingarrón JM. Gold screen-printed-based impedimetric immunobiosensors for direct and sensitive Escherichia coli quantisation. Biosens Bioelectron 2009; 24:3365-71. [PMID: 19481924 DOI: 10.1016/j.bios.2009.04.047] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2009] [Revised: 04/20/2009] [Accepted: 04/30/2009] [Indexed: 10/20/2022]
Abstract
Label-free electrochemical impedance immunosensors for the detection and quantification of Escherichia coli (E. coli) using self-assembled monolayers (SAMs)-modified gold screen-printed electrodes (AuSPEs) were developed. Two different immunosensor configurations were tested and compared. In the first one, the immunosensing design was based on the covalent immobilization of anti-E. coli at AuSPEs using the homobifunctional cross-linker 3,3'-dithiobis[sulfosuccinimidylpropionate] (DTSSP). The other one was based on the immobilization of the thiolated antibody onto the electrode surface. In both cases, the evaluation of the developed immunosensors performance was accomplished through the monitoring of the electron-transfer resistance detected by electrochemical impedance spectroscopy (EIS) in the presence of [Fe(CN)(6)(3-)]/[Fe(CN)(6)(4-)] as redox probe. The configuration using the thiolated antibodies gave rise to a better analytical performance, exhibiting a linear relationship between the increment in the electron-transfer resistance (DeltaR(et)) and the logarithmic value of the E. coli concentration in the 5-1.0 x 10(8) cfu mL(-1) range. The limit of detection achieved, with no need for preconcentration or pre-enrichment steps was 3.3 cfu mL(-1). The developed immunosensors showed a high selectivity against Staphylococcus aureus (S. aureus) and Salmonella choleraesuis (S. choleraesuis). The usefulness of the thiolated antibodies-based design for the rapid analysis (1h) of 10 cfu mL(-1)E. coli inoculated river and tap water samples was demonstrated.
Collapse
Affiliation(s)
- Vanessa Escamilla-Gómez
- Departamento Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain
| | | | | | | |
Collapse
|
29
|
García-Aljaro C, Muñoz FX, Baldrich E. Captavidin: a new regenerable biocomponent for biosensing? Analyst 2009; 134:2338-43. [DOI: 10.1039/b905050g] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
30
|
Poitras C, Tufenkji N. A QCM-D-based biosensor for E. coli O157:H7 highlighting the relevance of the dissipation slope as a transduction signal. Biosens Bioelectron 2008; 24:2137-42. [PMID: 19118996 DOI: 10.1016/j.bios.2008.11.016] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2008] [Revised: 10/27/2008] [Accepted: 11/11/2008] [Indexed: 12/14/2022]
Abstract
A biosensor for detection of viable Escherichia coli (E. coli) O157:H7 is developed using a quartz crystal microbalance with dissipation monitoring (QCM-D). The detection platform is based on the immobilization of affinity purified polyclonal antibodies onto gold-coated QCM-D quartz crystals via a cysteamine self-assembled monolayer. QCM-D measurements conducted over a broad range of bacterial cell concentrations show that the optimal biosensor response is the initial slope of the dissipation shift as a function of elapsed time (D(slope)). A highly log-log linear response in the initial D(slope) is obtained for detection of E. coli O157:H7 over a wide range of cell concentrations from 3 x 10(5) to 1 x 10(9)cells/mL. The prepared biosensor also exhibits a log-log linear working range from 10(7) to 10(9)cells/mL for E. coli K12 D21, a non-pathogenic model organism and further shows satisfactory selectivity using Bacillus subtilis. To our knowledge, this is the first study demonstrating the use of the initial D(slope) as a sensor response when using QCM-D technology.
Collapse
Affiliation(s)
- Charles Poitras
- Department of Chemical Engineering, McGill University, Montreal, Quebec H3A 2B2, Canada
| | | |
Collapse
|
31
|
Kim N, Kim DK, Cho YJ, Moon DK, Kim WY. Carp vitellogenin detection by an optical waveguide lightmode spectroscopy biosensor. Biosens Bioelectron 2008; 24:391-6. [DOI: 10.1016/j.bios.2008.04.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2007] [Revised: 03/24/2008] [Accepted: 04/18/2008] [Indexed: 11/29/2022]
|
32
|
Quan L, Wei D, Jiang X, Liu Y, Li Z, Li N, Li K, Liu F, Lai L. Resurveying the Tris buffer solution: The specific interaction between tris(hydroxymethyl)aminomethane and lysozyme. Anal Biochem 2008; 378:144-50. [DOI: 10.1016/j.ab.2008.04.006] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2008] [Revised: 04/01/2008] [Accepted: 04/03/2008] [Indexed: 10/22/2022]
|
33
|
Baldrich E, Laczka O, Del Campo FJ, Muñoz FX. Gold immuno-functionalisation via self-assembled monolayers: study of critical parameters and comparative performance for protein and bacteria detection. J Immunol Methods 2008; 336:203-12. [PMID: 18534611 DOI: 10.1016/j.jim.2008.04.017] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2007] [Revised: 04/22/2008] [Accepted: 04/23/2008] [Indexed: 11/26/2022]
Abstract
Surface functionalisation is of extreme importance in assay and biosensor development because it ensures the selective capture and detection of the targets of interest. In the present report, we compare the performance of several gold functionalisation strategies/chemistries, based on SAM self-assembly and Ab conjugation, for protein and bacteria detection. The first part of the work summarises the optimisation of the various protocols considered. Their efficiency was initially evaluated in terms of reduction of biomolecule non-specific adsorption and specific detection competence impairment, using as a model-target an enzyme-labelled protein. With this purpose, the effect of several parameters, such as thiomolecule length and concentration, self-assembly time and temperature, polymer incorporation, or Ab conjugation strategy was determined. The three best performing strategies consisted of antibody (Ab) conjugation to self-assembled monolayers (SAM) containing mercaptoundecanoic acid alone, or conjugated to either long-chain hydrophilic diamines or CM-dextran. In the three cases, results demonstrated that Abs had been successfully incorporated and remained functional for protein detection. Nevertheless, as showed in the second part of the work, we demonstrate for the first time that these chemistries can be inadequate for bacteria detection. The possible reasons and implications will be discussed. Ab physisorption is proposed as a cost-effective gold immuno-functionalisation strategy alternative to SAM-based Ab incorporation for bacteria detection.
Collapse
Affiliation(s)
- Eva Baldrich
- Instituto de Microelectrónica de Barcelona (IMB-CNM), CSIC, Esfera UAB, Campus Universitat Autónoma de Barcelona, Barcelona 08193, Spain.
| | | | | | | |
Collapse
|
34
|
Kim N, Kim DK, Kim WY. Sulfamethazine detection with direct-binding optical waveguide lightmode spectroscopy-based immunosensor. Food Chem 2008; 108:768-73. [DOI: 10.1016/j.foodchem.2007.11.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2006] [Revised: 06/11/2007] [Accepted: 11/09/2007] [Indexed: 10/22/2022]
|
35
|
Yang L, Bashir R. Electrical/electrochemical impedance for rapid detection of foodborne pathogenic bacteria. Biotechnol Adv 2008; 26:135-50. [DOI: 10.1016/j.biotechadv.2007.10.003] [Citation(s) in RCA: 397] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2007] [Revised: 10/04/2007] [Accepted: 10/17/2007] [Indexed: 11/30/2022]
|
36
|
Chapter 4 Immunochemical and Receptor Technologies: The Role of Immunoassay, Immunoaffinity Chromatography, Immunosensors and Molecularly Imprinted Polymeric Sensors. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/s0166-526x(08)00004-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
|
37
|
Zourob M, Elwary S, Turner A. Acoustic Wave (TSM) Biosensors: Weighing Bacteria. PRINCIPLES OF BACTERIAL DETECTION: BIOSENSORS, RECOGNITION RECEPTORS AND MICROSYSTEMS 2008. [PMCID: PMC7121835 DOI: 10.1007/978-0-387-75113-9_12] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
This chapter is focused on the development and use of acoustic wave biosensor platforms for the detection of bacteria, specifically those based on the thickness shear mode (TSM) resonator. We demonstrated the mechanical and electrical implications of bacterial positioning at the solid-liquid interface of a TSM biosensor and presented a model of the TSM with bacteria attached operating as coupled oscillators. The experiments and model provide an understanding of the nature of the signals produced by acoustic wave devices when they are used for testing bacteria. The paradox of “negative mass” could be a real threat to the interpretation of experimental results related to the detection of bacteria. The knowledge of the true nature of “negative mass” linked to the strength of bacteria attachment will contribute significantly to our understanding of the results of “weighing bacteria.” The results of this work can be used for bacterial detection and control of processes of bacterial settlement, bacterial colonization, biofilm formation, and bacterial infection in which bacterial attachment plays a role.
Collapse
Affiliation(s)
| | - Souna Elwary
- Consultant to Biophage Pharma Inc, Montreal, Canada
| | | |
Collapse
|
38
|
Biosensors and bio-based methods for the separation and detection of foodborne pathogens. ADVANCES IN FOOD AND NUTRITION RESEARCH 2008; 54:1-44. [PMID: 18291303 DOI: 10.1016/s1043-4526(07)00001-0] [Citation(s) in RCA: 92] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The safety of our food supply is always a major concern to consumers, food producers, and regulatory agencies. A safer food supply improves consumer confidence and brings economic stability. The safety of foods from farm-to-fork through the supply chain continuum must be established to protect consumers from debilitating, sometimes fatal episodes of pathogen outbreaks. The implementation of preventive strategies like hazard analysis critical control points (HACCP) assures safety but its full utility will not be realized unless supportive tools are fully developed. Rapid, sensitive, and accurate detection methods are such essential tools that, when integrated with HACCP, will improve safety of products. Traditional microbiological methods are powerful, error-proof, and dependable but these lengthy, cumbersome methods are often ineffective because they are not compatible with the speed at which the products are manufactured and the short shelf life of products. Automation in detection methods is highly desirable, but is not achievable with traditional methods. Therefore, biosensor-based tools offer the most promising solutions and address some of the modern-day needs for fast and sensitive detection of pathogens in real time or near real time. The application of several biosensor tools belonging to the categories of optical, electrochemical, and mass-based tools for detection of foodborne pathogens is reviewed in this chapter. Ironically, geometric growth in biosensor technology is fueled by the imminent threat of bioterrorism through food, water, and air and by the funding through various governmental agencies.
Collapse
|
39
|
Ding YJ, Wang H, Jiang JH, Shen GL, Yu RQ. Iridium Oxide Film-Enhanced Impedance Immunosensor for Rapid Detection of Carcinoembyronic Antigen. CHINESE J CHEM 2007. [DOI: 10.1002/cjoc.200790239] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
40
|
Xu J, Suarez D, Gottfried DS. Detection of avian influenza virus using an interferometric biosensor. Anal Bioanal Chem 2007; 389:1193-9. [PMID: 17710386 DOI: 10.1007/s00216-007-1525-3] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2007] [Revised: 07/18/2007] [Accepted: 07/26/2007] [Indexed: 11/25/2022]
Abstract
An interferometric biosensor immunoassay for direct and label-less detection of avian influenza through whole virus capture on a planar optical waveguide is described. The assay response is based on index of refraction changes that occur upon binding of virus particles to unique antigen-specific (hemagglutinin) antibodies on the waveguide surface. Three virus subtypes (two H7 and one H8) in buffer solution were tested using both monoclonal and polyclonal capture antibodies. The real-time response of the antigen-antibody interaction was measured and was shown to be concentration-dependent, with detection limits as low as 0.0005 hemagglutination units per milliliter. A simple sandwich assay was shown to further increase the biosensor response.
Collapse
Affiliation(s)
- Jie Xu
- Georgia Tech Research Institute, Georgia Institute of Technology, Atlanta, GA 30332-0801, USA
| | | | | |
Collapse
|
41
|
Hao C, Yan F, Ding L, Xue Y, Ju H. A self-assembled monolayer based electrochemical immunosensor for detection of leukemia K562A cells. Electrochem commun 2007. [DOI: 10.1016/j.elecom.2007.01.047] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
|
42
|
Study on peptide-peptide interaction using high-performance affinity chromatography and quartz crystal microbalance biosensor. CHINESE SCIENCE BULLETIN-CHINESE 2007. [DOI: 10.1007/s11434-007-0175-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
43
|
Edwards GS, Allen SJ, Haglund RF, Nemanich RJ, Redlich B, Simon JD, Yang WC. Applications of Free-Electron Lasers in the Biological and Material Sciences¶. Photochem Photobiol 2007. [DOI: 10.1111/j.1751-1097.2005.tb01437.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
44
|
Luo J, Zhang Q, Huang Y, Liu G, Zhao R. Quartz crystal microbalance biosensor for recombinant human interferon-beta detection based on antisense peptide approach. Anal Chim Acta 2007; 590:91-7. [PMID: 17416227 DOI: 10.1016/j.aca.2007.03.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2006] [Revised: 03/06/2007] [Accepted: 03/12/2007] [Indexed: 10/23/2022]
Abstract
Quartz crystal microbalance (QCM) biosensors for recombinant human interferon-beta (rhIFN-beta) were constructed by utilizing antisense peptides adhering to the QCM gold surfaces. Two antisense peptides, both corresponding to the N-terminal fragment 1-14 of rhIFN-beta, were used in this study. Antisense peptide AS-1 was the original antisense peptide and AS-2 was the modified antisense peptide based on the antisense peptide degeneracy. Both antisense peptides were immobilized on the gold electrodes of piezoelectric crystals, respectively, via a self-assembling monolayer of 1,2-ethanedithiol. The binding affinity between rhIFN-beta and each immobilized antisense peptide in solution was evaluated using a quartz crystal microbalance-flow injection analysis (QCM-FIA) system. The dissociation constant of rhIFN-beta on the antisense peptide AS-1 and AS-2 biosensor was (1.89+/-0.101) x 10(-4) and (1.22+/-0.0479) x 10(-5) mol L(-1), respectively. The results suggested that AS-2 had a higher binding affinity to rhIFN-beta than AS-1. The detection for rhIFN-beta using each biosensor was precise and reproducible. The linear response ranges of rhIFN-beta binding to both biosensors were same with a concentration range of 0.12-0.96 mg mL(-1). The results demonstrated the successful construction of highly selective QCM biosensors using antisense peptide approach, and also confirmed the feasibility of increasing antisense peptide binding affinity by appropriate sequence modification.
Collapse
Affiliation(s)
- Jia Luo
- Beijing National Laboratory for Molecular Sciences, Laboratory of Analytical Chemistry for Life Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
| | | | | | | | | |
Collapse
|
45
|
Guntupalli R, Lakshmanan RS, Johnson ML, Hu J, Huang TS, Barbaree JM, Vodyanoy VJ, Chin BA. Magnetoelastic biosensor for the detection of Salmonella typhimurium in food products. ACTA ACUST UNITED AC 2007. [DOI: 10.1007/s11694-006-9003-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
46
|
Chatrathi MP, Wang J, Collins GE. Sandwich electrochemical immunoassay for the detection of Staphylococcal enterotoxin B based on immobilized thiolated antibodies. Biosens Bioelectron 2007; 22:2932-8. [PMID: 17223337 PMCID: PMC7074827 DOI: 10.1016/j.bios.2006.12.013] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2006] [Revised: 11/07/2006] [Accepted: 12/05/2006] [Indexed: 11/18/2022]
Abstract
A new approach for the sensitive detection of Staphylococcal enterotoxin B (SEB) is presented based upon an electrochemical enzymatic immunoassay that utilizes thiolated antibodies immobilized on a gold surface. This method relies on the use of amine- or sulfhydryl-reactive heterobifunctional cross-linkers for the introduction of 2-pyridyl-disulfide groups to the antibody. The disulfide-containing linkages are subsequently cleaved with a suitable reducing agent, such as dithiothreitol (DTT), and the thiolated antibody-gold bond is covalently formed on a gold working electrode. Various cross-linking agents for immobilization of the capture antibody onto the gold electrode were investigated and compared. Factors influencing the thiolation and immobilization were investigated and optimized. The feasibility of such antibody immobilization and the subsequent sandwich enzyme immunoassay is demonstrated for the sensitive detection of SEB. The detection limit estimated from a representative dose-response curve is 1 ng/mL, corresponding to 5 pg in a 5-microL sample. Coupling the specificity of immunoassays with the sensitivity and low detection limits of electrochemical detection shows real promise for future sensing technology in enabling the development of single-use disposable devices.
Collapse
Affiliation(s)
| | | | - Greg E. Collins
- Corresponding Author: ; Phone: (+1) 202-404-3337; Fax: (+1) 202-404-8119
| |
Collapse
|
47
|
Liu Y, Tang X, Pei J, Zhang L, Liu F, Li K. Gastrodin Interaction with Human Fibrinogen: Anticoagulant Effects and Binding Studies. Chemistry 2006; 12:7807-15. [PMID: 16847996 DOI: 10.1002/chem.200600549] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
In an effort to identify the anticoagulant activity of gastrodin (GAS) and to investigate the possibility of its use as a novel anticoagulant drug, the binding characteristics of GAS to human fibrinogen (Fg) were studied by using a quartz crystal microbalance (QCM) biosensor, anticoagulant animal experiments, and a molecular docking simulation. Real-time kinetic analysis with the QCM biosensor revealed that the in vitro binding of GAS to Fg was strong under physiological ionic conditions as the determined equilibrium dissociation constant (KD) was 1.94 x 10(-6) M. To check whether this strong binding may influence the natural coagulation function of Fg, the in vivo effect of GAS on the coagulation system of rats was examined. The results showed that GAS can significantly prolong the coagulation time (CT) and decrease the Fg content, while it had no effect on the activated kaolin partial thromboplastin time (KPTT) or prothrombin time (PT) in rats. To clarify the mechanism of the specific interaction, a molecular docking simulation was also performed to provide reasonable binding models for the interaction of GAS with Fg at the atomic level. GAS binds strongly to the inherent polymerization sites "a" and "b" (holes) on the Fg molecule with similar binding free energies of about -34 kJ mol(-1). Altogether, these findings confirmed first that GAS possesses anticoagulant activity and that the possible anticoagulation mechanism of GAS mainly involves its interference with the knob-to-hole interactions between fibrin molecules, thereby effectively inhibiting the formation of clots and decreasing the risk of thrombosis. The study has also shown the potential usefulness of QCM biosensor technology for the rapid screening of drug-protein interactions.
Collapse
Affiliation(s)
- Yang Liu
- College of Chemistry and Molecular Engineering Peking University Beijing, 100871, China.
| | | | | | | | | | | |
Collapse
|
48
|
Mansuy-Schlick V, Delage-Mourroux R, Jouvenot M, Boireau W. Strategy of macromolecular grafting onto a gold substrate dedicated to protein–protein interaction measurements. Biosens Bioelectron 2006; 21:1830-7. [PMID: 16406567 DOI: 10.1016/j.bios.2005.11.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2005] [Revised: 11/17/2005] [Accepted: 11/23/2005] [Indexed: 11/18/2022]
Abstract
Many biotechnology applications use proteins immobilized on surface. For biosensor, the sensing layer is a key component interfacing the transducer and the sample. Strategies employed to activate the bidimensional surface act directly on the performance of the biosensor. In this paper we propose a novel strategy for engineered proteins self-assembly. Our original supramolecular structure allows a direct and fast covalent attachment of proteins onto bare gold substrate through a homobifunctional cross-linker, 1,4-di-([2'-pyridyldithio]propionamido)butane (DPDPB). In this work, engineered proteins and linker-protein complexes were synthesized and characterized by gel electrophoresis, chromatography and spectroscopy experiments. Macromolecular construction "DPDPB-GST tag-GEC1 protein" was conceived in order to guarantee a 2D architecture enhancing the capabilities of the target (tubulin) to recognize its partner (GEC1). Surface plasmon resonance measurements clearly showed potential of this particular self-assembled protein layer compared to a commercial immunosensor interface. At the concentrations tested, the recognition process occurs between tubulin and the immobilized GEC1; moreover enhanced binding was obtained with the home-made 2D sensing layer more than with 3D carboxymethyl dextran matrix.
Collapse
Affiliation(s)
- V Mansuy-Schlick
- Equipe Estrogènes, Expression Génique et Pathologies du Système Nerveux Central, Université de Franche-Comté, U.F.R. Sciences et Techniques, IFR 133, 16 Route de Gray, 25030 Besançon Cedex, France
| | | | | | | |
Collapse
|
49
|
Yang L, Li Y. Simultaneous detection of Escherichia coli O157∶H7 and Salmonella Typhimurium using quantum dots as fluorescence labels. Analyst 2006; 131:394-401. [PMID: 16496048 DOI: 10.1039/b510888h] [Citation(s) in RCA: 244] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, we explored the use of semiconductor quantum dots (QDs) as fluorescence labels in immunoassays for simultaneous detection of two species of foodborne pathogenic bacteria, Escherichia coli O157:H7 and Salmonella Typhimurium. QDs with different sizes can be excited with a single wavelength of light, resulting in different emission peaks that can be measured simultaneously. Highly fluorescent semiconductor quantum dots with different emission wavelengths (525 nm and 705 nm) were conjugated to anti-E. coli O157 and anti-Salmonella antibodies, respectively. Target bacteria were separated from samples by using specific antibody coated magnetic beads. The bead-cell complexes reacted with QD-antibody conjugates to form bead-cell-QD complexes. Fluorescent microscopic images of QD labeled E. coli and Salmonella cells demonstrated that QD-antibody conjugates could evenly and completely attach to the surface of bacterial cells, indicating that the conjugated QD molecules still retain their effective fluorescence, while the conjugated antibody molecules remain active and are able to recognize their specific target bacteria in a complex mixture. The intensities of fluorescence emission peaks at 525 nm and 705 nm of the final complexes were measured for quantitative detection of E. coli O157:H7 and S. Typhimurium simultaneously. The fluorescence intensity (FI) as a function of cell number (N) was found for Salmonella and E. coli, respectively. The regression models can be expressed as: FI = 60.6 log N- 250.9 with R(2) = 0.97 for S. Typhimurium, and FI = 77.8 log N- 245.2 with R(2) = 0.91 for E. coli O157:H7 in the range of cell numbers from 10(4) to 10(7) cfu ml(-1). The detection limit of this method was 10(4) cfu ml(-1). The detection could be completed within 2 hours. The principle of this method could be extended to detect multiple species of bacteria (3-4 species) simultaneously, depending on the availability of each type of QD-antibody conjugates with a unique emission peak and the antibody coated magnetic beads specific to each species of bacteria.
Collapse
Affiliation(s)
- Liju Yang
- Department of Biological and Agricultural Engineering, Center of Excellence for Poultry Science, University of Arkansas, 203 Engineering Hall, Fayetteville, AR 72701, USA
| | | |
Collapse
|
50
|
Chen H, Heng CK, Puiu PD, Zhou XD, Lee AC, Lim TM, Tan SN. Detection of Saccharomyces cerevisiae immobilized on self-assembled monolayer (SAM) of alkanethiolate using electrochemical impedance spectroscopy. Anal Chim Acta 2005. [DOI: 10.1016/j.aca.2005.08.086] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|