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Shukhratovich Abdullaev S, H Althomali R, Raza Khan A, Sanaan Jabbar H, Abosoda M, Ihsan A, Aggarwal S, Mustafa YF, Hammoud Khlewee I, Jabbar AM. Integrating of analytical techniques with enzyme-mimicking nanomaterials for the fabrication of microfluidic systems for biomedical analysis. Talanta 2024; 273:125896. [PMID: 38479027 DOI: 10.1016/j.talanta.2024.125896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 03/05/2024] [Accepted: 03/07/2024] [Indexed: 04/09/2024]
Abstract
Bioanalysis faces challenges in achieving fast, reliable, and point-of-care (POC) determination methods for timely diagnosis and prognosis of diseases. POC devices often display lower sensitivity compared to laboratory-based methods, limiting their ability to quantify low concentrations of target analytes. To enhance sensitivity, the synthesis of new materials and improvement of the efficiency of the analytical strategies are necessary. Enzyme-mimicking materials have revolutionized the field of the fabrication of new high-throughput sensing devices. The integration of microfluidic chips with analytical techniques offers several benefits, such as easy miniaturization, need for low biological sample volume, etc., while also enhancing the sensitivity of the probe. The use enzyme-like nanomaterials in microfluidic systems can offer portable strategies for real-time and reliable detection of biological agents. Colorimetry and electrochemical methods are commonly utilized in the fabrication of nanozyme-based microfluidic systems. The review summarizes recent developments in enzyme-mimicking materials-integrated microfluidic analytical methods in biomedical analysis and discusses the current challenges, advantages, and potential future directions.
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Affiliation(s)
- Sherzod Shukhratovich Abdullaev
- Faculty of Chemical Engineering, New Uzbekistan University, Tashkent, Uzbekistan; Scientific and Innovation Department, Tashkent State Pedagogical University Named After Nizami, Tashkent, Uzbekistan.
| | - Raed H Althomali
- Department of Chemistry, Prince Sattam Bin Abdulaziz University,College of Arts and Science, Wadi Al-Dawasir 11991, Saudi Arabia
| | - Ahmad Raza Khan
- Department of Industrial and Manufacturing Engineering (Rachna College), University of Engineering and Technology, Lahore, 54700, Pakistan
| | - Hijran Sanaan Jabbar
- Department of Chemistry, College of Science, Salahaddin University-Erbil, Kurdistan Region, Iraq.
| | - Munther Abosoda
- Chemistry department, the Islamic University, Najaf, Iraq; Chemistry department, the Islamic University of Al Diwaniyah, Iraq; Chemistry department, the Islamic University of Babylon, Iraq
| | - Ali Ihsan
- Chemistry department, Imam Ja'afar Al-Sadiq University, Al-Muthanna 66002, Iraq
| | - Saurabh Aggarwal
- Department of Mechanical Engineering, Uttaranchal Institute of Technology, Uttaranchal University, India
| | - Yasser Fakri Mustafa
- Department of Pharmaceutical Chemistry, College of Pharmacy, University of Mosul, Mosul-41001, Iraq
| | - Ibrahim Hammoud Khlewee
- Department of Prosthodontics, College of Health and Medical Technololgy, Al-Ayen University, Thi-Qar, Iraq
| | - Abeer Mhussan Jabbar
- college of pharmacy/ National University of Science and Technology, Dhi Qar, Iraq
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Samadi Khezri M, Housaindokht MR, Firouzi M. Designing and prototyping a novel biosensor based on a volumetric bar-chart chip for urea detection. LAB ON A CHIP 2024; 24:2298-2305. [PMID: 38517043 DOI: 10.1039/d3lc00730h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
A volumetric bar-chart chip (V-chip) is a microfluidic device based on distance-based quantitative measurement that visualizes analyte concentration without the need for apparatus or data processing. This typically utilizes special receptors and catalysis parts that generate oxygen, so ink can be moved inside the channels, and enables instant visual quantitation of the analyte. However, the low stability of some macromolecules, the use of expensive catalysts, and difficulty in controlling the process cause inaccurate readings, and therefore, limit further development and the use of these systems. In this article, we introduced a novel approach that eliminates the use of catalysts in V-chips and provides an efficient and simple path in the design of biosensors. The product of the enzymatic reaction of urease with urea is bicarbonate, which turns into CO2 gas in an acidic environment. Therefore, the amount of gas produced is proportional to the amount of urea in the sample, and it can be quantitatively measured by visual detection from the amount of ink movement caused by CO2 gas pressure. This biosensor has a linear response range of 0 to 1000 μg ml-1 and a detection limit of 3.6 μg ml-1 in raw milk. The recovery of urea in raw milk at 100 and 400 μg ml-1 concentrations was 96.5% and 98.9%, respectively. This volumetric chip shows potential for determining urea levels in real samples without requiring additional equipment. The combination of the sensitivity and specificity of enzymatic reactions, inherent gas-generating reactions, and the processability of microchips discussed in this paper can be the basis for the comprehensive development of volumetric chips, which can create a new path for the development of efficient and cheap biosensors.
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Affiliation(s)
- Mahdi Samadi Khezri
- Department of Chemistry, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran.
| | - Mohammad Reza Housaindokht
- Department of Chemistry, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran.
- Research and Technology Center of Biomolecules, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Mojtaba Firouzi
- Department of Chemistry, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran.
- Research and Technology Center of Biomolecules, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
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3
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Qu K, Morioka K, Nakamura K, Yamamoto S, Hemmi A, Shoji A, Nakajima H. Development of a C-reactive protein quantification method based on flow rate measurement of an ink solution pushed out by oxygen gas generated by catalase reaction. Mikrochim Acta 2023; 191:24. [PMID: 38091091 DOI: 10.1007/s00604-023-06108-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 11/19/2023] [Indexed: 12/18/2023]
Abstract
A novel determination method for protein biomarkers based on on-chip flow rate measurement was developed using a microchip with organic photodiodes (OPDs). This quantitative method is based on the flow rate measurement of an ink solution pushed out by oxygen gas generated through catalase reaction. The amount of oxygen gas generated in the sample reservoir is dependent on the concentration of the analyte; therefore, the flow rate of the ink solution is also dependent on the concentration of the analyte. The concentration of the analyte can thus be estimated by measurement of the ink solution flow rate. The ink solution flow rate was estimated by measuring the migration time of the ink solution between two points using two OPDs placed below the microchannel. The principle of this method was demonstrated by the measurement of catalase using the microchip. In addition, the developed method was applied to the determination of C-reactive protein (CRP), a biomarker of inflammation, based on a catalase-linked immunosorbent assay (C-LISA). The limit of detection for CRP was 0.20 µg/mL. The method was also applied to the determination of CRP in human serum, and the quantitative values obtained by this method were in excellent agreement with those obtained by the conventional enzyme-linked immunosorbent assay (ELISA) method. The developed method does not require a photodetector with high sensitivity and is thus capable of downsizing; therefore, this will be useful for on-site analyses such as point-of-care testing and field measurements.
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Affiliation(s)
- Kuizhi Qu
- Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo, 192-0397, Japan
| | - Kazuhiro Morioka
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan.
| | - Konoka Nakamura
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Shoji Yamamoto
- Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo, 192-0397, Japan
| | - Akihide Hemmi
- Mebius Advanced Technology Ltd., 3-31-6-105 Nishiogi-Kita, Suginami-Ku, Tokyo, 167-0042, Japan
| | - Atsushi Shoji
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Hizuru Nakajima
- Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo, 192-0397, Japan.
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4
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Chen M, Qiu Q, Qileng A, Shen H, Liu W, Liu Y. Efficient Nanozyme-Triggered Pressure Sensor for Point-of-Care Immunoassay: Visual Sensing and Time Readout Device. Anal Chem 2023; 95:11383-11390. [PMID: 37458998 DOI: 10.1021/acs.analchem.3c01547] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
Point-of-care testing (POCT), with its portability and high sensitivity, is an analytical device for rapid on-site sensing and detection. In this study, a POCT device was designed for the portable detection of illegal additives by integrating a coil device that can visually sense color distance and a two-electrode electrochemical system. Real-time monitoring of pressure changes was achieved by driving CeO2@Pt/Au nanoparticle (NP)-labeled antibodies into a competitive immunoreaction, in which CeO2 and Pt/Au synergistically catalyzed the production of large amounts of O2 from H2O2, leading to a significant increase in gas within the closed chamber. Attractively, the coil device converted the pressure stimulus into visually readable change in distance for semi-quantitative detection of the target substance, while the electrical signal output caused by the changes of the solution around the electrodes achieved accurate and reliable quantification of the target. In addition, the proposed dual-mode pressure immunoassay device has acceptable selectivity, stability, and reproducibility. Herein, this portable device, which enables target concentration readings by converting pressure into multiple signals, provides an effective way to visualize POCT assays in resource-limited areas.
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Affiliation(s)
- Mengting Chen
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Qiqian Qiu
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
| | - Aori Qileng
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Haoran Shen
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
| | - Weipeng Liu
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
| | - Yingju Liu
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China
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5
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Liu Q, Wei H, Du Y. Microfluidic bioanalysis based on nanozymes. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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6
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Development of an Integrated Biochip System Consisting of a Magnetic Particle Washing Station and a Markerless Volumetric Biochip. BIOCHIP JOURNAL 2022. [DOI: 10.1007/s13206-022-00084-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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7
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Wang Z, Chen R, Hou Y, Qin Y, Li S, Yang S, Gao Z. DNA hydrogels combined with microfluidic chips for melamine detection. Anal Chim Acta 2022; 1228:340312. [DOI: 10.1016/j.aca.2022.340312] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/15/2022] [Accepted: 08/22/2022] [Indexed: 11/01/2022]
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8
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Development of an Inkless, Visual Volumetric Chip Operated with a Micropipette. BIOCHIP JOURNAL 2021. [DOI: 10.1007/s13206-021-00021-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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9
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Li Y, Men X, Gao G, Tian Y, Wen Y, Zhang X. A distance-based capillary biosensor using wettability alteration. LAB ON A CHIP 2021; 21:719-724. [PMID: 33475116 DOI: 10.1039/d0lc01147a] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Distance-based detection methods with a quantitative readout are of great significance to point-of-care testing (POCT), are low-cost and user-friendly, and can be integrated into portable analytical devices. Here, we submit a visual quantitative distance-based sensor by capillary force alteration in a capillary tube. This sensor converts the wettability alteration caused by the target molecules into a capillary rise height signal. Moreover, the sensor profits from isothermal amplification technology, achieving the detection of miRNAs with high sensitivity and specificity by visually reading the height of the water in the capillary tube. The proposed biosensor shows great potential in routine clinical diagnosis as well as POCT in resource-limited settings.
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Affiliation(s)
- Yansheng Li
- Beijing Key Laboratory for Sensors, Beijing Information Science & Technology University, Beijing 100192, P.R. China.
| | - Xiujin Men
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, P.R. China.
| | - Guowei Gao
- Beijing Key Laboratory for Sensors, Beijing Information Science & Technology University, Beijing 100192, P.R. China.
| | - Ye Tian
- Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R. China
| | - Yongqiang Wen
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, P.R. China.
| | - Xueji Zhang
- School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen, Guangdong 518060, P.R. China.
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10
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Tang X, Wu J, Wu W, Zhang Z, Zhang W, Zhang Q, Zhang W, Chen X, Li P. Competitive-Type Pressure-Dependent Immunosensor for Highly Sensitive Detection of Diacetoxyscirpenol in Wheat via Monoclonal Antibody. Anal Chem 2020; 92:3563-3571. [PMID: 31899867 DOI: 10.1021/acs.analchem.9b03933] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Diacetoxyscirpenol (DAS) is a type A trichothecene mycotoxin with low molecular weight, and with respect to its toxicity and the occurrence in food and feed, it is known as a potential risk for public and animal health. In the present study, first, a sensitive and specific monoclonal antibody (5E7) was developed. Then, the antibody was applied to develop a competitive-type pressure-dependent immunosensor (CTPDI). The Au@PtNP was synthesized and labeled with goat antimouse antibody (Au@PtNPs-IgG). Finally, the concentration of DAS was negatively correlated with the pressure signal. In the presence of optimal conditions, matrix-matched calibration curves were plotted for wheat samples, in which an optimal IC50 value (half maximal inhibitory concentration) of 3.08 ng/g was achieved. The CTPDI was further applied to detect natural and blind wheat samples, and validation was carried out by liquid chromatography-tandem mass spectrometry. The results showed that CTPDI was highly appropriate and accurate for detection of DAS in wheat.
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Affiliation(s)
- Xiaoqian Tang
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, P. R. China
| | - Jing Wu
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, P. R. China
| | - Wenqin Wu
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, P. R. China
| | - Zhaowei Zhang
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, P. R. China
| | - Weiqi Zhang
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, P. R. China
| | - Qi Zhang
- Key Laboratory of Detection for Mycotoxins, Ministry of Agriculture, Wuhan 430062, P. R. China
| | - Wen Zhang
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, P. R. China.,Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, P. R. China.,Laboratory of Quality & Safety Risk Assessment for Oilseed Products (Wuhan), Ministry of Agriculture, Wuhan 430062, P. R. China
| | - Xiaomei Chen
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, P. R. China
| | - Peiwu Li
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, P. R. China.,Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, P. R. China.,Laboratory of Quality & Safety Risk Assessment for Oilseed Products (Wuhan), Ministry of Agriculture, Wuhan 430062, P. R. China.,Key Laboratory of Detection for Mycotoxins, Ministry of Agriculture, Wuhan 430062, P. R. China.,Quality Inspection & Test Center for Oilseed Products, Ministry of Agriculture, Wuhan 430062, P. R. China
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11
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Liu D, Wang J, Wu L, Huang Y, Zhang Y, Zhu M, Wang Y, Zhu Z, Yang C. Trends in miniaturized biosensors for point-of-care testing. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2019.115701] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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12
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A microfluidic immunosensor for visual detection of foodborne bacteria using immunomagnetic separation, enzymatic catalysis and distance indication. Mikrochim Acta 2019; 186:757. [PMID: 31707541 DOI: 10.1007/s00604-019-3883-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 09/29/2019] [Indexed: 10/25/2022]
Abstract
A disposable visual microfluidic immunosensor is described for the determination of foodborne pathogens using immunomagnetic separation, enzymatic catalysis and distance indication. Specifically, a sensor was designed to detect Salmonella typhimurium as a model pathogen. Magnetic nanoparticles (MNPs) were modified with the anti-Salmonella monoclonal antibodies and then used to enrich S. typhimurium from the sample. This is followed by conjugation to polystyrene microspheres modified with anti-Salmonella polyclonal antibodies and catalase to form the MNP-bacteria-polystyrene-catalase sandwich. The catalase on the complexes catalyzes the decomposition of hydrogen peroxide to produce oxygen after passing a micromixer. The generated oxygen gas increases the pressure in the chip and pushes the indicating red dye solution to travel along the channel towards the unsealed outlet. The travel distance of the red dye can be visually read and related to the amount of S. typhimurium using the calibration scale. The sensor can detect as low as 150 CFU·mL-1 within 2 h. Graphical abstractSchematic representation of the distance-based microfluidic immunosensor for visual detection of foodborne bacteria using immunomagnetic nanoparticles for bacteria separation, catalase for decomposition of hydrogen peroxide to form oxygen which causes a pressure increase, and red dyed particles movement for distance indication.
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13
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Suntornsuk W, Suntornsuk L. Recent applications of paper‐based point‐of‐care devices for biomarker detection. Electrophoresis 2019; 41:287-305. [DOI: 10.1002/elps.201900258] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 09/30/2019] [Accepted: 10/05/2019] [Indexed: 12/12/2022]
Affiliation(s)
- Worapot Suntornsuk
- Department of Microbiology, Faculty of ScienceKing Mongkut's University of Technology Thonburi Bangkok Thailand
| | - Leena Suntornsuk
- Department of Pharmaceutical ChemistryFaculty of PharmacyMahidol University Bangkok Thailand
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14
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Control of capillary behavior through target-responsive hydrogel permeability alteration for sensitive visual quantitative detection. Nat Commun 2019; 10:1036. [PMID: 30850603 PMCID: PMC6408548 DOI: 10.1038/s41467-019-08952-1] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Accepted: 02/04/2019] [Indexed: 12/22/2022] Open
Abstract
DNA hydrogels have received considerable attention in analytical science, however, some limitations still exist in the applications of intelligent hydrogels. In this paper, we describe a way to prepare gel film in a capillary tube based on the thermal reversible principle of DNA hydrogel and the principle of capillary action. Because of the slight change in the internal structure of gel, its permeability can be increased by the addition of some specific targets. The capillary behavior is thus changed due to the different permeability of the hydrogel film. The duration time of the target solution flowing through the capillary tube with a specified length is used to quantify this change. With this proposed method, ultra-trace DNA hydrogel (0.01 μL) is sufficient to realize the sensitive detection of cocaine without the aid of other instruments, which has a low detection limit (1.17 nM) and good selectivity. DNA hydrogels have received considerable attention in analytical science but limitations still exist in the applications of intelligent hydrogels. Here, the authors describe a DNA hydrogel sensor for quantitative detection of cocaine based on the permeability change in a DNA hydrogel film.
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15
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Optical fiber amplifier for quantitative and sensitive point-of-care testing of myoglobin and miRNA-141. Biosens Bioelectron 2019; 129:87-92. [DOI: 10.1016/j.bios.2018.12.056] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Revised: 12/15/2018] [Accepted: 12/18/2018] [Indexed: 12/24/2022]
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16
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Kong FZ, Jahan S, Zhong R, Cao XY, Li WL, Wang YX, Xiao H, Liu WW, Cao CX. Electrophoresis Titration Model of a Moving Redox Boundary Chip for a Point-of-Care Test of an Enzyme-Linked Immunosorbent Assay. ACS Sens 2019; 4:126-133. [PMID: 30604605 DOI: 10.1021/acssensors.8b01017] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Enzyme-linked immunosorbent assays (ELISAs) have been widely used in clinical examination, food safety, and environmental analyses. However, they still face a great challenge in designing a device for a point-of-care test (POCT) due to its bulk optical detector and complexity. Herein an electrophoresis titration (ET) model of a moving redox boundary (MRB) was proposed for constructing an ET-ELISA chip of a POCT just with sextuplet electrode pairs and laminated cells. The chip had an anodic well, middle well, and cathode well which were connected by microchannels. The ELISA process was conducted in the bottom of the middle well, where horseradish peroxidase (HRP) catalyzed 3,3',5,5'-tetra-methyl benzidine (TMB) as a blue TMB dimer with two positive charges. Under an electrical field of 29 V, the TMB dimer migrated into the titration channel and reacted with the ascorbic acid, creating an MRB. The MRB motion was a function of antigen content, indicating a visual distance-based assay. As a proof of concept, a C-reactive protein was chosen as a model antigen. The experiments systemically validated the ET-ELISA model and method. Particularly, the chip was smartphone-detected, traditional power supply free, and did not use sulfuric acid used in typical ELISA, making the ET-ELISA method extremely simple, portable, and safe. The ET-ELISA has great potential to visual and portable ELISA in clinical medicine, the environment, and food safety immunoassay.
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17
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Bu S, Wang K, Ju C, Han Y, Li Z, Du P, Hao Z, Li C, Liu W, Wan J. A pregnancy test strip for detection of pathogenic bacteria by using concanavalin A-human chorionic gonadotropin-Cu3(PO4)2 hybrid nanoflowers, magnetic separation, and smartphone readout. Mikrochim Acta 2018; 185:464. [DOI: 10.1007/s00604-018-2968-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Accepted: 08/18/2018] [Indexed: 12/17/2022]
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18
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Graphene nanocomposites modified electrochemical aptamer sensor for rapid and highly sensitive detection of prostate specific antigen. Biosens Bioelectron 2018; 121:41-46. [PMID: 30196046 DOI: 10.1016/j.bios.2018.08.067] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 08/16/2018] [Accepted: 08/27/2018] [Indexed: 01/04/2023]
Abstract
Prostate specific antigen (PSA) is a widely used marker for the diagnosis of prostate cancer, and the increasing attention has been attracted on the development of rapid assay using biosensing technology. However, it remains challenging for the sensitive and selective detection of PSA in clinical samples. Here, we report a label-free microfluidic paper-based analytical device for highly sensitive electrochemical detection of PSA. The paper device was fabricated with wax printing to generate hydrophobic and hydrophilic layers for the construction of microfluidic channel, followed by screen-printing of three electrodes including working, counter and reference electrode. Gold nanoparticles (AuNPs)/reduced graphene oxide (rGO)/thionine (THI) nano composites were synthesized and characterized, which were coated onto working electrodes for the immobilization of DNA aptamer probe. THI servers as the electrochemical mediator to transduce the biological recognition between DNA aptamer and PSA, and the excellent conductivity of AuNPs and rGO also play a significant role of electron transfer, leading to a sensitive detection for PSA, able to detect PSA as low as 10 pg mL-1, with a linear range from 0.05 to 200 ng mL-1. We demonstrated that our electrochemical sensor for the detection of clinical serum samples, indicating that our sensor would provide a new platform for low cost, sensitive and point-of-care diagnosis of prostate cancer.
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Li Y, Jiao X, Du X, Wang F, Wei Q, Wen Y, Zhang X. Wettability alteration in a functional capillary tube for visual quantitative point of care testing. Analyst 2018; 143:3001-3005. [PMID: 29888353 DOI: 10.1039/c8an00735g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Capillarity is an extremely common physical-chemical phenomenon related to wettability in nature, which has wide theoretical and practical interest. Herein, we reported a facile sensing device based on capillary force change in a vertical capillary tube. In this height-based capillary sensor (HCS), the inner surface of the capillary tube was modified with a layer of molecules with wetting responsibility based on the well-known simple surface chemistry. With targets in different concentrations, the wettability of the surface modified with responsive molecules would produce different changes. The responsive surfaces would change the capillary force of the vertical capillary tube, and result in different column heights. Like a thermometer, H+ and phenol have been quantified visually based on the height of the liquid inside the capillary tube.
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Affiliation(s)
- Yansheng Li
- Research Center for Bioengineering and Sensing Technology, School of Chemistry & Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
| | - Xiangyu Jiao
- Research Center for Bioengineering and Sensing Technology, School of Chemistry & Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
| | - Xin Du
- Research Center for Bioengineering and Sensing Technology, School of Chemistry & Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
| | - Fang Wang
- Research Center for Bioengineering and Sensing Technology, School of Chemistry & Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
| | - Qianhui Wei
- Research Center for Bioengineering and Sensing Technology, School of Chemistry & Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
| | - Yongqiang Wen
- Research Center for Bioengineering and Sensing Technology, School of Chemistry & Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
| | - Xueji Zhang
- Research Center for Bioengineering and Sensing Technology, School of Chemistry & Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
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He Z, Elbaz A, Gao B, Zhang J, Su E, Gu Z. Disposable Morpho menelaus Based Flexible Microfluidic and Electronic Sensor for the Diagnosis of Neurodegenerative Disease. Adv Healthc Mater 2018; 7. [PMID: 29345124 DOI: 10.1002/adhm.201701306] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 11/29/2017] [Indexed: 01/01/2023]
Abstract
Rapid early disease prevention or precise diagnosis is almost impossible in low-resource settings. Natural ordered structures in nature have great potential for the development of ultrasensitive biosensors. Here, motivated by the unique structures and extraordinary functionalities of ordered structures in nature, a biosensor based on butterfly wings is presented. In this study, a flexible Morpho menelaus (M. menelaus) based wearable sensor is integrated with a microfluidic system and electronic networks to facilitate the diagnosis of neurodegenerative disease (ND). In the microfluidic section, the structural characteristics of the M. menelaus wings up layer are combined with SiO2 nanoparticles to form a heterostructure. The fluorescent enhancement property of the heterostructure is used to increase the fluorescent intensity for multiplex detection of two proteins: IgG and AD7c-NTP. For the electronic section, conductive ink is blade-coated on the under layer of wings for measuring resistance change rate to obtain the frequency of static tremors of ND patients. The disposable M. menelaus based flexible microfluidic and electronic sensor enables biochemical-physiological hybrid monitoring of ND. The sensor is also amenable to a variety of applications, such as comprehensive personal healthcare and human-machine interaction.
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Affiliation(s)
- Zhenzhu He
- State Key Laboratory of Bioelectronics; School of Biological Science and Medical Engineering; Southeast University; Nanjing 210096 China
| | - Abdelrahman Elbaz
- State Key Laboratory of Bioelectronics; School of Biological Science and Medical Engineering; Southeast University; Nanjing 210096 China
| | - Bingbing Gao
- State Key Laboratory of Bioelectronics; School of Biological Science and Medical Engineering; Southeast University; Nanjing 210096 China
| | - Junning Zhang
- State Key Laboratory of Bioelectronics; School of Biological Science and Medical Engineering; Southeast University; Nanjing 210096 China
| | - Enben Su
- Getein Biotech; Inc. No.9 Bofu Road, Luhe Distric Nanjing 211505 Jiangsu China
| | - Zhongze Gu
- State Key Laboratory of Bioelectronics; School of Biological Science and Medical Engineering; Southeast University; Nanjing 210096 China
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Liu D, Tian T, Chen X, Lei Z, Song Y, Shi Y, Ji T, Zhu Z, Yang L, Yang C. Gas-generating reactions for point-of-care testing. Analyst 2018; 143:1294-1304. [DOI: 10.1039/c8an00011e] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Gas generation-based measurement is an attractive alternative approach for POC (Point-of-care) testing, which relies on the amount of generated gas to detect the corresponding target concentrations.
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Du X, Xie X. Non-Equilibrium Diffusion Controlled Ion-Selective Optical Sensor for Blood Potassium Determination. ACS Sens 2017; 2:1410-1414. [PMID: 28949507 DOI: 10.1021/acssensors.7b00614] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Blood electrolyte measurements play important roles in clinical diagnostics. Optical ion sensors as simple and elegant as a mercury thermometer are in high demand. We present here an analytical method to quantify potassium ions in undiluted human blood and plasma by measuring the distance or the rate of the color propagation. The sensor was composed of K+-selective nanospheres embedded in an agarose hydrogel where mass transport was diffusion controlled. The sensor's color-changing rate and the distance of color propagation depended linearly on the logarithm of K+ activity. A theoretical model was established and fully supported the experimental findings. This work lays the foundation of a new family of optical ion sensors for direct determination of common blood electrolytes.
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Affiliation(s)
- Xinfeng Du
- Department
of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, P. R. China
| | - Xiaojiang Xie
- Department
of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, P. R. China
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23
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Liu D, Li X, Zhou J, Liu S, Tian T, Song Y, Zhu Z, Zhou L, Ji T, Yang C. A fully integrated distance readout ELISA-Chip for point-of-care testing with sample-in-answer-out capability. Biosens Bioelectron 2017; 96:332-338. [DOI: 10.1016/j.bios.2017.04.044] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 04/13/2017] [Accepted: 04/27/2017] [Indexed: 10/19/2022]
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