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Pinheiro KMP, Guinati BGS, Moreira NS, Coltro WKT. Low-Cost Microfluidic Systems for Detection of Neglected Tropical Diseases. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2023; 16:117-138. [PMID: 37068747 DOI: 10.1146/annurev-anchem-091522-024759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Neglected tropical diseases (NTDs) affect tropical and subtropical countries and are caused by viruses, bacteria, protozoa, and helminths. These kinds of diseases spread quickly due to the tropical climate and limited access to clean water, sanitation, and health care, which make exposed people more vulnerable. NTDs are reported to be difficult and inefficient to diagnose. As mentioned, most NTDs occur in countries that are socially vulnerable, and the lack of resources and access to modern laboratories and equipment intensify the difficulty of diagnosis and treatment, leading to an increase in the mortality rate. Portable and low-cost microfluidic systems have been widely applied for clinical diagnosis, offering a promising alternative that can meet the needs for fast, affordable, and reliable diagnostic tests in developing countries. This review provides a critical overview of microfluidic devices that have been reported in the literature for the detection of the most common NTDs over the past 5 years.
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Affiliation(s)
| | | | - Nikaele S Moreira
- Instituto de Química, Universidade Federal de Goiás, Goiânia, Brazil;
| | - Wendell K T Coltro
- Instituto de Química, Universidade Federal de Goiás, Goiânia, Brazil;
- Instituto Nacional de Ciência e Tecnologia de Bioanalítica, Campinas, Brazil
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2
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Maeno H, Ogata S, Shimizu T, Yang M. Enhancement of Molecular Transport into Film Stacked Structures for Micro-Immunoassay by Unsteady Rotation. MICROMACHINES 2023; 14:744. [PMID: 37420977 DOI: 10.3390/mi14040744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 03/06/2023] [Accepted: 03/26/2023] [Indexed: 07/09/2023]
Abstract
A film-stacked structure consisting of polyethylene terephthalate (PET) films stacked in a gap of 20 µm that can be combined with 96-well microplates used in biochemical analysis has been developed by the authors. When this structure is inserted into a well and rotated, convection flow is generated in the narrow gaps between the films to enhance the chemical/bio reaction between the molecules. However, since the main component of the flow is a swirling flow, only a part of the solution circulates into the gaps, and reaction efficiency is not achieved as designed. In this study, an unsteady rotation is applied to promote the analyte transport into the gaps using the secondary flow generated on the surface of the rotating disk. Finite element analysis is used to evaluate the changes in flow and concentration distribution for each rotation operation and to optimize the rotation conditions. In addition, the molecular binding ratio for each rotation condition is evaluated. It is shown that the unsteady rotation accelerates the binding reaction of proteins in an ELISA (Enzyme Linked Immunosorbent Assay), a type of immunoassay.
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Affiliation(s)
- Hinata Maeno
- Department of Mechanical System Engineering, Faculty of System Design, Tokyo Metropolitan University, Tokyo 191-0065, Japan
| | - Satoshi Ogata
- Department of Mechanical System Engineering, Faculty of System Design, Tokyo Metropolitan University, Tokyo 191-0065, Japan
| | - Tetsuhide Shimizu
- Department of Mechanical System Engineering, Faculty of System Design, Tokyo Metropolitan University, Tokyo 191-0065, Japan
| | - Ming Yang
- Department of Mechanical System Engineering, Faculty of System Design, Tokyo Metropolitan University, Tokyo 191-0065, Japan
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3
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Geissler M, Ponton A, Nassif C, Malic L, Turcotte K, Lukic L, Morton KJ, Veres T. Use of Polymer Micropillar Arrays as Templates for Solid-Phase Immunoassays. ACS APPLIED POLYMER MATERIALS 2022; 4:5287-5297. [PMID: 37552739 PMCID: PMC9173674 DOI: 10.1021/acsapm.2c00163] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 04/20/2022] [Indexed: 08/10/2023]
Abstract
We investigate the use of periodic micropillar arrays produced by high-fidelity microfabrication with cyclic olefin polymers for solid-phase immunoassays. These three-dimensional (3D) templates offer higher surface-to-volume ratios than two-dimensional substrates, making it possible to attach more antibodies and so increase the signal obtained by the assay. Micropillar arrays also provide the capacity to induce wicking, which is used to distribute and confine antibodies on the surface with spatial control. Micropillar array substrates are modified by using oxygen plasma treatment, followed by grafting of (3-aminopropyl)triethoxysilane for binding proteins covalently using glutaraldehyde as a cross-linker. The relationship between microstructure and fluorescence signal was investigated through variation of pitch (10-50 μm), pillar diameter (5-40 μm), and pillar height (5-57 μm). Our findings suggest that signal intensity scales proportionally with the 3D surface area available for performing solid-phase immunoassays. A linear relationship between fluorescence intensity and microscale structure can be maintained even when the aspect ratio and pillar density both become very high, opening the possibility of tuning assay response by design such that desired signal intensity is obtained over a wide dynamic range compatible with different assays, analyte concentrations, and readout instruments. We demonstrate the versatility of the approach by performing the most common immunoassay formats-direct, indirect, and sandwich-in a qualitative fashion by using colorimetric and fluorescence-based detection for a number of clinically relevant protein markers, such as tumor necrosis factor alpha, interferon gamma (IFN-γ), and spike protein of severe acute respiratory syndrome coronavirus 2. We also show quantitative detection of IFN-γ in serum using a fluorescence-based sandwich immunoassay and calibrated samples with spike-in concentrations ranging from 50 pg/mL to 5 μg/mL, yielding an estimated limit of detection of ∼1 pg/mL for arrays with high micropillar density (11561 per mm2) and aspect ratio (1:11.35).
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Affiliation(s)
- Matthias Geissler
- Life Sciences Division, National Research Council of
Canada, 75 de Mortagne Boulevard, Boucherville, QC J4B 6Y4,
Canada
| | - André Ponton
- Life Sciences Division, National Research Council of
Canada, 75 de Mortagne Boulevard, Boucherville, QC J4B 6Y4,
Canada
| | - Christina Nassif
- Life Sciences Division, National Research Council of
Canada, 75 de Mortagne Boulevard, Boucherville, QC J4B 6Y4,
Canada
| | - Lidija Malic
- Life Sciences Division, National Research Council of
Canada, 75 de Mortagne Boulevard, Boucherville, QC J4B 6Y4,
Canada
| | - Karine Turcotte
- Life Sciences Division, National Research Council of
Canada, 75 de Mortagne Boulevard, Boucherville, QC J4B 6Y4,
Canada
| | - Ljuboje Lukic
- Life Sciences Division, National Research Council of
Canada, 75 de Mortagne Boulevard, Boucherville, QC J4B 6Y4,
Canada
| | - Keith J. Morton
- Life Sciences Division, National Research Council of
Canada, 75 de Mortagne Boulevard, Boucherville, QC J4B 6Y4,
Canada
| | - Teodor Veres
- Life Sciences Division, National Research Council of
Canada, 75 de Mortagne Boulevard, Boucherville, QC J4B 6Y4,
Canada
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Maeno H, Wong PF, AbuBakar S, Yang M, Sam SS, Jamil-Abd J, Shunmugarajoo A, Mustafa M, Said RM, Mageswaren E, Azmel A, Mat Jelani A. A 3D Microfluidic ELISA for the Detection of Severe Dengue: Sensitivity Improvement and Vroman Effect Amelioration by EDC-NHS Surface Modification. MICROMACHINES 2021; 12:mi12121503. [PMID: 34945351 PMCID: PMC8715748 DOI: 10.3390/mi12121503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 11/20/2021] [Accepted: 11/29/2021] [Indexed: 11/16/2022]
Abstract
Serum is commonly used as a specimen in immunoassays but the presence of heterophilic antibodies can potentially interfere with the test results. Previously, we have developed a microfluidic device called: 3D Stack for enzyme-linked immunosorbent assay (ELISA). However, its evaluation was limited to detection from a single protein solution. Here, we investigated the sensitivity of the 3D Stack in detecting a severe dengue biomarker—soluble CD163 (sCD163)—within the serum matrix. To determine potential interactions with serum matrix, a spike-and-recovery assay was performed, using 3D Stacks with and without surface modification by an EDC–NHS (N-ethyl-N′-(3-(dimethylamino)propyl)carbodiimide/N-hydroxysuccinimide) coupling. Without surface modification, a reduced analyte recovery in proportion to serum concentration was observed because of the Vroman effect, which resulted in competitive displacement of coated capture antibodies by serum proteins with stronger binding affinities. However, EDC–NHS coupling prevented antibody desorption and improved the sensitivity. Subsequent comparison of sCD163 detection using a 3D Stack with EDC–NHS coupling and conventional ELISA in dengue patients’ sera revealed a high correlation (R = 0.9298, p < 0.0001) between the two detection platforms. Bland–Altman analysis further revealed insignificant systematic error between the mean differences of the two methods. These data suggest the potentials of the 3D Stack for further development as a detection platform.
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Affiliation(s)
- Hinata Maeno
- Department of System Design, Tokyo Metropolitan University, Tokyo 191-0065, Japan;
| | - Pooi-Fong Wong
- Department of Pharmacology, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia;
| | - Sazaly AbuBakar
- Tropical Infectious Diseases Research and Educational Centre (TIDREC), University of Malaya, Kuala Lumpur 50603, Malaysia; (S.A.); (S.-S.S.); (J.J.-A.)
- WHO Collaborating Centre for Arbovirus Reference and Research (Dengue and Severe Dengue) MAA-12, University of Malaya, Kuala Lumpur 50603, Malaysia
- Medical Department, Tengku Ampuan Rahimah Hospital, Klang 41200, Malaysia; (A.S.); (E.M.); (A.A.)
| | - Ming Yang
- Department of System Design, Tokyo Metropolitan University, Tokyo 191-0065, Japan;
- Correspondence:
| | - Sing-Sin Sam
- Tropical Infectious Diseases Research and Educational Centre (TIDREC), University of Malaya, Kuala Lumpur 50603, Malaysia; (S.A.); (S.-S.S.); (J.J.-A.)
- WHO Collaborating Centre for Arbovirus Reference and Research (Dengue and Severe Dengue) MAA-12, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Juraina Jamil-Abd
- Tropical Infectious Diseases Research and Educational Centre (TIDREC), University of Malaya, Kuala Lumpur 50603, Malaysia; (S.A.); (S.-S.S.); (J.J.-A.)
- WHO Collaborating Centre for Arbovirus Reference and Research (Dengue and Severe Dengue) MAA-12, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Anusha Shunmugarajoo
- Medical Department, Tengku Ampuan Rahimah Hospital, Klang 41200, Malaysia; (A.S.); (E.M.); (A.A.)
| | - Mahiran Mustafa
- Medical Department, Raja Perempuan Zainab II Hospital, Kota Bharu 15200, Malaysia; (M.M.); (A.M.J.)
| | - Rosaida Md Said
- Medical Department, Ampang Hospital, Ampang 68000, Malaysia;
| | - Eashwary Mageswaren
- Medical Department, Tengku Ampuan Rahimah Hospital, Klang 41200, Malaysia; (A.S.); (E.M.); (A.A.)
| | - Azureen Azmel
- Medical Department, Tengku Ampuan Rahimah Hospital, Klang 41200, Malaysia; (A.S.); (E.M.); (A.A.)
| | - Anilawati Mat Jelani
- Medical Department, Raja Perempuan Zainab II Hospital, Kota Bharu 15200, Malaysia; (M.M.); (A.M.J.)
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Hou T, Zhang Y, Wu T, Wang M, Zhang Y, Li R, Wang L, Xue Q, Wang S. Label-free detection of fibrinogen based on the fibrinogen-enhanced peroxidase activity of a fibrinogen-hemin composite. Analyst 2018; 143:725-730. [PMID: 29322134 DOI: 10.1039/c7an01661a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A simple, label-free colorimetric method for the determination of fibrinogen (Fib) in plasma is presented. In this work, it was observed that Fib interacted with hemin to form a hemin-Fib composite. Because Fib prevented hemin from the formation of m-oxo-dimers, the hemin-Fib composite possesses excellent peroxidase-like activity. Importantly, the peroxidase-like activity of Fib-hemin increased with the increase in the Fib. This allows us to utilize the H2O2-ABTS colorimetric system for the quantitative analysis of Fib. This optimized method provided a linear determination range of 2.0-100 pM with a correlation of 0.9975. The limit of detection for Fib was experimentally determined to be 0.7 pM based on a signal-to-noise ratio (S/N) of 3. This novel approach provides a rapid, sensitive, cost efficient and robust bioassay for detection of Fib in pathology and clinical applications.
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Affiliation(s)
- Tingting Hou
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China.
| | - Yuanfu Zhang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China.
| | - Tao Wu
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China.
| | - Meifeng Wang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China.
| | - Yinghong Zhang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China.
| | - Rui Li
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China.
| | - Lei Wang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China.
| | - Qingwang Xue
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China.
| | - Shuhao Wang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China.
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Rapid ELISA Using a Film-Stack Reaction Field with Micropillar Arrays. SENSORS 2017; 17:s17071608. [PMID: 28696378 PMCID: PMC5539656 DOI: 10.3390/s17071608] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2017] [Revised: 06/26/2017] [Accepted: 07/09/2017] [Indexed: 11/25/2022]
Abstract
A film-stack reaction field with a micropillar array using a motor stirrer was developed for the high sensitivity and rapid enzyme-linked immunosorbent assay (ELISA) reaction. The effects of the incubation time of a protein (30 s, 5 min, and 10 min) on the fluorescence intensity in ELISAs were investigated using a reaction field with different micropillar array dimensions (5-µm, 10-µm and 50-µm gaps between the micropillars). The difference in fluorescence intensity between the well with the reaction field of 50-µm gap for the incubation time of 30 s and the well without the reaction field with for incubation time of 10 min was 6%. The trend of the fluorescence intensity in the gap between the micro pillars in the film-stack reaction field was different between the short incubation time and the long incubation time. The theoretical analysis of the physical parameters related with the biomolecule transport indicated that the reaction efficiency defined in this study was the dominant factor determining the fluorescence intensity for the short incubation time, whereas the volumetric rate of the circulating flow through the space between films and the specific surface area were the dominant factors for the long incubation time.
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