1
|
Melnik E, Kurzhals S, Mutinati GC, Beni V, Hainberger R. Electrochemical Diffusion Study in Poly(Ethylene Glycol) Dimethacrylate-Based Hydrogels. SENSORS (BASEL, SWITZERLAND) 2024; 24:3678. [PMID: 38894467 PMCID: PMC11175328 DOI: 10.3390/s24113678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 05/17/2024] [Accepted: 05/23/2024] [Indexed: 06/21/2024]
Abstract
Hydrogels are of great importance for functionalizing sensors and microfluidics, and poly(ethylene glycol) dimethacrylate (PEG-DMA) is often used as a viscosifier for printable hydrogel precursor inks. In this study, 1-10 kDa PEG-DMA based hydrogels were characterized by gravimetric and electrochemical methods to investigate the diffusivity of small molecules and proteins. Swelling ratios (SRs) of 14.43-9.24, as well as mesh sizes ξ of 3.58-6.91 nm were calculated, and it was found that the SR correlates with the molar concentration of PEG-DMA in the ink (MCI) (SR = 0.1127 × MCI + 8.3256, R2 = 0.9692) and ξ correlates with the molecular weight (Mw) (ξ = 0.3382 × Mw + 3.638, R2 = 0.9451). To investigate the sensing properties, methylene blue (MB) and MB-conjugated proteins were measured on electrochemical sensors with and without hydrogel coating. It was found that on sensors with 10 kDa PEG-DMA hydrogel modification, the DPV peak currents were reduced to 92 % for MB, 73 % for MB-BSA, and 23 % for MB-IgG. To investigate the diffusion properties of MB(-conjugates) in hydrogels with 1-10 kDa PEG-DMA, diffusivity was calculated from the current equation. It was found that diffusivity increases with increasing ξ. Finally, the release of MB-BSA was detected after drying the MB-BSA-containing hydrogel, which is a promising result for the development of hydrogel-based reagent reservoirs for biosensing.
Collapse
Affiliation(s)
- Eva Melnik
- Molecular Diagnostics, AIT Austrian Institute of Technology GmbH, 1210 Vienna, Austria; (S.K.); (G.C.M.); (R.H.)
| | - Steffen Kurzhals
- Molecular Diagnostics, AIT Austrian Institute of Technology GmbH, 1210 Vienna, Austria; (S.K.); (G.C.M.); (R.H.)
| | - Giorgio C. Mutinati
- Molecular Diagnostics, AIT Austrian Institute of Technology GmbH, 1210 Vienna, Austria; (S.K.); (G.C.M.); (R.H.)
| | - Valerio Beni
- Bioelectronics and Organic Electronics, Smart Hardware, Digital Systems, RISE Research Institutes of Sweden, 60233 Norrköping, Sweden;
| | - Rainer Hainberger
- Molecular Diagnostics, AIT Austrian Institute of Technology GmbH, 1210 Vienna, Austria; (S.K.); (G.C.M.); (R.H.)
| |
Collapse
|
2
|
Peleman C, Van Coillie S, Ligthart S, Choi SM, De Waele J, Depuydt P, Benoit D, Schaubroeck H, Francque SM, Dams K, Jacobs R, Robert D, Roelandt R, Seurinck R, Saeys Y, Rajapurkar M, Jorens PG, Hoste E, Vanden Berghe T. Ferroptosis and pyroptosis signatures in critical COVID-19 patients. Cell Death Differ 2023; 30:2066-2077. [PMID: 37582864 PMCID: PMC10482958 DOI: 10.1038/s41418-023-01204-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 07/26/2023] [Accepted: 08/04/2023] [Indexed: 08/17/2023] Open
Abstract
Critical COVID-19 patients admitted to the intensive care unit (ICU) frequently suffer from severe multiple organ dysfunction with underlying widespread cell death. Ferroptosis and pyroptosis are two detrimental forms of regulated cell death that could constitute new therapeutic targets. We enrolled 120 critical COVID-19 patients in a two-center prospective cohort study to monitor systemic markers of ferroptosis, iron dyshomeostasis, pyroptosis, pneumocyte cell death and cell damage on the first three consecutive days after ICU admission. Plasma of 20 post-operative ICU patients (PO) and 39 healthy controls (HC) without organ failure served as controls. Subsets of COVID-19 patients displayed increases in individual biomarkers compared to controls. Unsupervised clustering was used to discern latent clusters of COVID-19 patients based on biomarker profiles. Pyroptosis-related interleukin-18 accompanied by high pneumocyte cell death was independently associated with higher odds at mechanical ventilation, while the subgroup with high interleuking-1 beta (but limited pneumocyte cell death) displayed reduced odds at mechanical ventilation and lower mortality hazard. Meanwhile, iron dyshomeostasis with a tendency towards higher ferroptosis marker malondialdehyde had no association with outcome, except for the small subset of patients with very high catalytic iron independently associated with reduced survival. Forty percent of patients did not have a clear signature of the cell death mechanisms studied in this cohort. Moreover, repeated moderate levels of soluble receptor of advanced glycation end products and growth differentiation factor 15 during the first three days after ICU admission are independently associated with adverse clinical outcome compared to sustained lower levels. Altogether, the data point towards distinct subgroups in this cohort of critical COVID-19 patients with different systemic signatures of pyroptosis, iron dyshomeostasis, ferroptosis or pneumocyte cell death markers that have different outcomes in ICU. The distinct groups may allow 'personalized' treatment allocation in critical COVID-19 based on systemic biomarker profiles.
Collapse
Affiliation(s)
- Cédric Peleman
- Laboratory of Experimental Medicine and Paediatrics, Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium
- Department of Gastroenterology and Hepatology, Antwerp University Hospital, Edegem, Belgium
| | - Samya Van Coillie
- VIB-UGent Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Symen Ligthart
- Laboratory of Experimental Medicine and Paediatrics, Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium
- Division of Intensive Care, Medicine, Antwerp University Hospital, Edegem, Belgium
| | - Sze Men Choi
- VIB-UGent Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Jan De Waele
- Intensive Care Unit, Department of Internal Medicine and Pediatrics, Ghent University Hospital, Ghent University, Ghent, Belgium
| | - Pieter Depuydt
- Intensive Care Unit, Department of Internal Medicine and Pediatrics, Ghent University Hospital, Ghent University, Ghent, Belgium
| | - Dominique Benoit
- Intensive Care Unit, Department of Internal Medicine and Pediatrics, Ghent University Hospital, Ghent University, Ghent, Belgium
| | - Hannah Schaubroeck
- Intensive Care Unit, Department of Internal Medicine and Pediatrics, Ghent University Hospital, Ghent University, Ghent, Belgium
| | - Sven M Francque
- Laboratory of Experimental Medicine and Paediatrics, Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium
- Department of Gastroenterology and Hepatology, Antwerp University Hospital, Edegem, Belgium
| | - Karolien Dams
- Laboratory of Experimental Medicine and Paediatrics, Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium
- Division of Intensive Care, Medicine, Antwerp University Hospital, Edegem, Belgium
| | - Rita Jacobs
- Laboratory of Experimental Medicine and Paediatrics, Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium
- Division of Intensive Care, Medicine, Antwerp University Hospital, Edegem, Belgium
| | - Dominique Robert
- Laboratory of Experimental Medicine and Paediatrics, Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium
- Division of Intensive Care, Medicine, Antwerp University Hospital, Edegem, Belgium
| | - Ria Roelandt
- VIB-UGent Center for Inflammation Research, Ghent, Belgium
- Department of Applied Mathematics, Computer Science and Statistics, Ghent University, Ghent, Belgium
| | - Ruth Seurinck
- VIB-UGent Center for Inflammation Research, Ghent, Belgium
- Department of Applied Mathematics, Computer Science and Statistics, Ghent University, Ghent, Belgium
| | - Yvan Saeys
- VIB-UGent Center for Inflammation Research, Ghent, Belgium
- Department of Applied Mathematics, Computer Science and Statistics, Ghent University, Ghent, Belgium
| | - Mohan Rajapurkar
- Department of Nephrology, Muljibhai Patel Society for Research in Nephro-Urology, Nadiad, India
| | - Philippe G Jorens
- Laboratory of Experimental Medicine and Paediatrics, Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium
- Division of Intensive Care, Medicine, Antwerp University Hospital, Edegem, Belgium
| | - Eric Hoste
- Intensive Care Unit, Department of Internal Medicine and Pediatrics, Ghent University Hospital, Ghent University, Ghent, Belgium
| | - Tom Vanden Berghe
- VIB-UGent Center for Inflammation Research, Ghent, Belgium.
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.
- Laboratory of Pathophysiology, Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium.
| |
Collapse
|
3
|
Meeseepong M, Ghosh G, Shrivastava S, Lee NE. Fluorescence-Enhanced Microfluidic Biosensor Platform Based on Magnetic Beads with Highly Stable ZnO Nanorods for Biomarker Detection. ACS APPLIED MATERIALS & INTERFACES 2023; 15:21754-21765. [PMID: 37104719 DOI: 10.1021/acsami.2c22352] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Existing affinity-based fluorescence biosensing systems for monitoring of biomarkers often utilize a fixed solid substrate immobilized with capture probes limiting their use in continuous or intermittent biomarker detection. Furthermore, there have been challenges of integrating fluorescence biosensors with a microfluidic chip and low-cost fluorescence detector. Herein, we demonstrated a highly efficient and movable fluorescence-enhanced affinity-based fluorescence biosensing platform that can overcome the current limitations by combining fluorescence enhancement and digital imaging. Fluorescence-enhanced movable magnetic beads (MBs) decorated with zinc oxide nanorods (MB-ZnO NRs) were used for digital fluorescence-imaging-based aptasensing of biomolecules with improved signal-to-noise ratio. High stability and homogeneous dispersion of photostable MB-ZnO NRs were obtained by grafting bilayered silanes onto the ZnO NRs. The ZnO NRs formed on MB significantly improved the fluorescence signal up to 2.35 times compared to the MB without ZnO NRs. Moreover, the integration of a microfluidic device for flow-based biosensing enabled continuous measurements of biomarkers in an electrolytic environment. The results showed that highly stable fluorescence-enhanced MB-ZnO NRs integrated with a microfluidic platform have significant potential for diagnostics, biological assays, and continuous or intermittent biomonitoring.
Collapse
Affiliation(s)
- Montri Meeseepong
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Korea
| | - Gargi Ghosh
- School of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Korea
| | - Sajal Shrivastava
- Symbiosis Centre for Nanoscience and Nanotechnology, Symbiosis International University, Pune 412115, India
| | - Nae-Eung Lee
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Korea
- School of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Korea
- Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Korea
- Institute of Quantum Biophysics (IQB), Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Korea
- Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Korea
| |
Collapse
|
4
|
Morioka K, Osashima M, Azuma N, Qu K, Hemmi A, Shoji A, Murakami H, Teshima N, Umemura T, Uchiyama K, Nakajima H. Development of a fluorescence microplate reader using an organic photodiode array with a large light receiving area. Talanta 2022; 238:122994. [PMID: 34857327 DOI: 10.1016/j.talanta.2021.122994] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 10/18/2021] [Accepted: 10/21/2021] [Indexed: 11/28/2022]
Abstract
We developed a small fluorescence microplate reader with an organic photodiode (OPD) array. The OPD array has nine OPDs that have a large light receiving area (9.62 mm2 per one OPD). Since the OPD array is fabricated on a flat glass plate, it can be placed just below microwells and can detect fluorescence emitted through the entire surface of the microwell bottom. The analytical performance of the developed plate reader was evaluated by measuring an aqueous solution of resorufin. The limit of detection (LOD) for resorufin (0.01-0.05 μM) was lower than that obtained with a plate reader equipped with nine inorganic photodiodes developed in a previous study (0.30 μM) and a commercially available microplate reader (0.16 μM). These results indicate that the large light receiving area improves the detection performance of the system. In addition, the developed reader was successfully used to quantify immunoglobulin A (IgA) in human saliva. The LOD for IgA was estimated to be 1.2 ng/mL, which is low enough to objectively evaluate human stress.
Collapse
Affiliation(s)
- Kazuhiro Morioka
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Moeko Osashima
- Department of Applied Chemistry, Graduate School of Urban Environmental Science, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachioji, Tokyo, 192-0397, Japan
| | - Nao Azuma
- Department of Applied Chemistry, Graduate School of Urban Environmental Science, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachioji, Tokyo, 192-0397, Japan
| | - Kuizhi Qu
- Department of Applied Chemistry, Graduate School of Urban Environmental Science, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachioji, Tokyo, 192-0397, Japan
| | - Akihide Hemmi
- Mebius Advanced Technology Ltd., 3-31-6 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
| | - Hiroya Murakami
- Department of Applied Chemistry, Aichi Institute of Technology, 1247 Yachigusa, Yakusa-cho, Toyota, Aichi, 470-0392, Japan
| | - Norio Teshima
- Department of Applied Chemistry, Aichi Institute of Technology, 1247 Yachigusa, Yakusa-cho, Toyota, Aichi, 470-0392, Japan
| | - Tomonari Umemura
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, 1432-1, Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Katsumi Uchiyama
- Department of Applied Chemistry, Graduate School of Urban Environmental Science, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachioji, Tokyo, 192-0397, Japan
| | - Hizuru Nakajima
- Department of Applied Chemistry, Graduate School of Urban Environmental Science, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachioji, Tokyo, 192-0397, Japan.
| |
Collapse
|
5
|
Descamps L, Audry MC, Howard J, Mekkaoui S, Albin C, Barthelemy D, Payen L, Garcia J, Laurenceau E, Le Roy D, Deman AL. Self-Assembled Permanent Micro-Magnets in a Polymer-Based Microfluidic Device for Magnetic Cell Sorting. Cells 2021; 10:cells10071734. [PMID: 34359904 PMCID: PMC8307954 DOI: 10.3390/cells10071734] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 06/25/2021] [Accepted: 07/05/2021] [Indexed: 12/22/2022] Open
Abstract
Magnetophoresis-based microfluidic devices offer simple and reliable manipulation of micro-scale objects and provide a large panel of applications, from selective trapping to high-throughput sorting. However, the fabrication and integration of micro-scale magnets in microsystems involve complex and expensive processes. Here we report on an inexpensive and easy-to-handle fabrication process of micrometer-scale permanent magnets, based on the self-organization of NdFeB particles in a polymer matrix (polydimethylsiloxane, PDMS). A study of the inner structure by X-ray tomography revealed a chain-like organization of the particles leading to an array of hard magnetic microstructures with a mean diameter of 4 µm. The magnetic performance of the self-assembled micro-magnets was first estimated by COMSOL simulations. The micro-magnets were then integrated into a microfluidic device where they act as micro-traps. The magnetic forces exerted by the micro-magnets on superparamagnetic beads were measured by colloidal probe atomic force microscopy (AFM) and in operando in the microfluidic system. Forces as high as several nanonewtons were reached. Adding an external millimeter-sized magnet allowed target magnetization and the interaction range to be increased. Then, the integrated micro-magnets were used to study the magnetophoretic trapping efficiency of magnetic beads, providing efficiencies of 100% at 0.5 mL/h and 75% at 1 mL/h. Finally, the micro-magnets were implemented for cell sorting by performing white blood cell depletion.
Collapse
Affiliation(s)
- Lucie Descamps
- CNRS, INSA Lyon, Ecole Centrale de Lyon, CPE Lyon, INL, UMR5270, University Lyon, Université Claude Bernard Lyon 1, 69622 Villeurbanne, France; (L.D.); (M.-C.A.); (J.H.); (S.M.)
| | - Marie-Charlotte Audry
- CNRS, INSA Lyon, Ecole Centrale de Lyon, CPE Lyon, INL, UMR5270, University Lyon, Université Claude Bernard Lyon 1, 69622 Villeurbanne, France; (L.D.); (M.-C.A.); (J.H.); (S.M.)
| | - Jordyn Howard
- CNRS, INSA Lyon, Ecole Centrale de Lyon, CPE Lyon, INL, UMR5270, University Lyon, Université Claude Bernard Lyon 1, 69622 Villeurbanne, France; (L.D.); (M.-C.A.); (J.H.); (S.M.)
| | - Samir Mekkaoui
- CNRS, INSA Lyon, Ecole Centrale de Lyon, CPE Lyon, INL, UMR5270, University Lyon, Université Claude Bernard Lyon 1, 69622 Villeurbanne, France; (L.D.); (M.-C.A.); (J.H.); (S.M.)
| | - Clément Albin
- CNRS, UMR5306 Institut Lumière Matière, University Lyon, Université Claude Bernard Lyon 1, 69100 Villeurbanne, France;
| | - David Barthelemy
- Laboratoire de Biochimie Et Biologie Moléculaire, Groupe Hospitalier Sud, Hospices Civils de Lyon, 69495 Pierre Bénite, France; (D.B.); (L.P.); (J.G.)
| | - Léa Payen
- Laboratoire de Biochimie Et Biologie Moléculaire, Groupe Hospitalier Sud, Hospices Civils de Lyon, 69495 Pierre Bénite, France; (D.B.); (L.P.); (J.G.)
| | - Jessica Garcia
- Laboratoire de Biochimie Et Biologie Moléculaire, Groupe Hospitalier Sud, Hospices Civils de Lyon, 69495 Pierre Bénite, France; (D.B.); (L.P.); (J.G.)
| | - Emmanuelle Laurenceau
- CNRS, INSA Lyon, CPE Lyon, CNRS, INL, UMR5270, University Lyon, Ecole Centrale de Lyon, Université Claude Bernard Lyon 1, 69130 Ecully, France;
| | - Damien Le Roy
- CNRS, UMR5306 Institut Lumière Matière, University Lyon, Université Claude Bernard Lyon 1, 69100 Villeurbanne, France;
- Correspondence: (D.L.R.); (A.-L.D.)
| | - Anne-Laure Deman
- CNRS, INSA Lyon, Ecole Centrale de Lyon, CPE Lyon, INL, UMR5270, University Lyon, Université Claude Bernard Lyon 1, 69622 Villeurbanne, France; (L.D.); (M.-C.A.); (J.H.); (S.M.)
- Correspondence: (D.L.R.); (A.-L.D.)
| |
Collapse
|
6
|
Abstract
Magnetophoresis offers many advantages for manipulating magnetic targets in microsystems. The integration of micro-flux concentrators and micro-magnets allows achieving large field gradients and therefore large reachable magnetic forces. However, the associated fabrication techniques are often complex and costly, and besides, they put specific constraints on the geometries. Magnetic composite polymers provide a promising alternative in terms of simplicity and fabrication costs, and they open new perspectives for the microstructuring, design, and integration of magnetic functions. In this review, we propose a state of the art of research works implementing magnetic polymers to trap or sort magnetic micro-beads or magnetically labeled cells in microfluidic devices.
Collapse
|
7
|
Yang J, Xiao X, Xia L, Li G, Shui L. Microfluidic Magnetic Analyte Delivery Technique for Separation, Enrichment, and Fluorescence Detection of Ultratrace Biomarkers. Anal Chem 2021; 93:8273-8280. [PMID: 34061492 DOI: 10.1021/acs.analchem.1c01130] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A microfluidic magnetic analyte delivery (μMAD) technique was developed to realize sample preparation and ultrasensitive biomarker detection. A simply designed microfluidic device was employed to carry out this technique, including a poly(dimethylsiloxane)-glass hybrid microchip having four straight rectangular channels and a permanent magnet. In the μMAD process, functionalized magnetic beads (MBs) were used to recognize and isolate analytes from a complex sample matrix, deliver analytes into tiny microchannels, and preconcentrate analytes in the magnetic trapping/detection region for in situ fluorescence detection. In the feasibility study and sensitivity optimization, horseradish peroxidase-labeled MBs were used, and critical parameters for the signal amplification performance of μMAD were carefully evaluated. At optimized conditions, a sensitivity improvement of at least 2 orders of magnitude was achieved. As a proof of concept, μMAD was combined with the enzyme-linked immunosorbent assay (ELISA), while carcinoembryonic antigen (CEA), prostate-specific antigen (PSA), and interleukin 6 (IL-6) were selected as model biomarkers. The limits of detection (LODs) of μMAD-ELISA were as low as 0.29 pg/mL for CEA, 0.047 pg/mL for PSA, and 0.021 pg/mL for IL-6, which corresponded to an over 200-fold reduction compared to their commercial ELISA results. Meanwhile, μMAD-ELISA revealed high selectivity and reproducibility. In clinical sample analysis, good accuracy was acquired for human serum analysis relative to commercial ELISA kits, and satisfied recoveries of 85.1-102% with RSDs of 1.7-9.8% for IL-6 and 84.7-113% with RSDs of 3.2-8.3% for interferon-γ were obtained. This ultrasensitive and easy operation technique provides a valuable approach for trace-level biomarker detection for practical applications.
Collapse
Affiliation(s)
- Jiani Yang
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Xiaohua Xiao
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Ling Xia
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Gongke Li
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Lingling Shui
- School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China
| |
Collapse
|
8
|
Liu H, Li Z, Shen R, Li Z, Yang Y, Yuan Q. Point-of-Care Pathogen Testing Using Photonic Crystals and Machine Vision for Diagnosis of Urinary Tract Infections. NANO LETTERS 2021; 21:2854-2860. [PMID: 33769062 DOI: 10.1021/acs.nanolett.0c04942] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Urinary tract infections (UTIs) caused by bacterial invasion can lead to life-threatening complications, posing a significant health threat to more than 150 million people worldwide. As a result, there is need for accurate and rapid diagnosis of UTIs to enable more effective treatment. Described here is an intelligent diagnostic system constructed for bacterial detection using an immunobiosensor, signal-amplification biochip, and image processing algorithm based on machine vision. This prototype can quickly detect bacteria by collection of enhanced luminescence enabled by the photonic crystals integrated into the biochip. By use of a machine vision algorithm, the very small luminescence signals are analyzed to provide a low detection limit and wide dynamic range. This sensor system can offer an affordable, accessible, and user-friendly digital diagnostic solution, possibly suitable for wearable technology, that could improve treatment of this challenging disease.
Collapse
Affiliation(s)
- Haoran Liu
- Key Laboratory of Biomedical Polymers of Ministry of Education, College of Chemistry and Molecular Sciences, School of Microelectronics, Wuhan University, Wuhan 430072, China
| | - Zhihao Li
- Key Laboratory of Biomedical Polymers of Ministry of Education, College of Chemistry and Molecular Sciences, School of Microelectronics, Wuhan University, Wuhan 430072, China
| | - Ruichen Shen
- Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Zhiheng Li
- Key Laboratory of Biomedical Polymers of Ministry of Education, College of Chemistry and Molecular Sciences, School of Microelectronics, Wuhan University, Wuhan 430072, China
| | - Yanbing Yang
- Key Laboratory of Biomedical Polymers of Ministry of Education, College of Chemistry and Molecular Sciences, School of Microelectronics, Wuhan University, Wuhan 430072, China
| | - Quan Yuan
- Key Laboratory of Biomedical Polymers of Ministry of Education, College of Chemistry and Molecular Sciences, School of Microelectronics, Wuhan University, Wuhan 430072, China
- Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| |
Collapse
|
9
|
Chen Y, Chen X, Li M, Fan P, Wang B, Zhao S, Yu W, Zhang S, Tang Y, Gao T. A new analytical platform for potential point-of-care testing of circulating tumor cells. Biosens Bioelectron 2020; 171:112718. [PMID: 33059165 DOI: 10.1016/j.bios.2020.112718] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Revised: 10/06/2020] [Accepted: 10/09/2020] [Indexed: 01/21/2023]
Abstract
It is of significance to detect circulating tumor cells (CTCs) in whole blood using transportable instruments at the point of care to assist evaluating chemotherapeutic efficacy and recurrence risk of cancer patients. However, the current widely used detection methods either require expensive and complex equipments, need complicated enrichment steps, or produce high rates of false positive and/or negative results. Aiming for solving the two critical challenges involved in instrumentation miniaturization and simplification of sample preparation for POCT of CTCs without sacrificing the detection sensitivity and accuracy, this work reports a custom-built, automatic, large field-of-view microscopic CTC cytometer and a novel enrichment strategy based on a synthesized peptide ligand discovered from One-Bead One-Compound library screening. The custom-built microscope has compact size, low weight and efficient cost while still maintaining a detection limit of as low as 5 target objects. The simplified sample preparation utilized a novel peptide LXW7 functionalized to magnetic beads and allows for rapid, highly selective and sensitive detection of CTCs. This analytical platform may fulfill the unmet need for possible point-of-care CTC counting, and provide a new option for early diagnosis of cancers and convenient evaluation of chemotherapeutic efficacy and cancer recurrence.
Collapse
Affiliation(s)
- Yangfei Chen
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, And Chemical Biology Center, College of Chemistry, Central China Normal University, Wuhan, 430079, Hubei, China
| | - Xuqi Chen
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, And Chemical Biology Center, College of Chemistry, Central China Normal University, Wuhan, 430079, Hubei, China
| | - Mengna Li
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, And Chemical Biology Center, College of Chemistry, Central China Normal University, Wuhan, 430079, Hubei, China
| | - Pengwei Fan
- Clinical Laboratory Center, Wuhan No. 7 Hospital, Wuhan, 430071, Hubei, China
| | - Bin Wang
- Clinical Laboratory Center, Wuhan No. 7 Hospital, Wuhan, 430071, Hubei, China
| | - Sheng Zhao
- Department of Urology, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei, China
| | - Weimin Yu
- Department of Urology, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei, China
| | - Shaohua Zhang
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, And Chemical Biology Center, College of Chemistry, Central China Normal University, Wuhan, 430079, Hubei, China
| | - Yuchen Tang
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, And Chemical Biology Center, College of Chemistry, Central China Normal University, Wuhan, 430079, Hubei, China
| | - Tingjuan Gao
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, And Chemical Biology Center, College of Chemistry, Central China Normal University, Wuhan, 430079, Hubei, China.
| |
Collapse
|
10
|
Zhu L, Liu X, Yang J, He Y, Li Y. Application of Multiplex Microfluidic Electrochemical Sensors in Monitoring Hematological Tumor Biomarkers. Anal Chem 2020; 92:11981-11986. [PMID: 32786466 DOI: 10.1021/acs.analchem.0c02430] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Rapid yet accurate detection of disease-related biomarkers is key for point of care testing, where there is an increasing demand for multi-index analysis. Here, we present a versatile device for multianalyte quantification based on the microfluidic technique and electrochemical sensor array. The analytes were shunted through inner-built channels to screen-printed electrodes installed at different positions of the chip. These electrodes were modified with different nanomaterials and sensing agents to afford specific responses to the corresponding indicators. To prove the applicability of the platform for multifunction, we chose leukemia as the model disease and determined four relevant markers: methotrexate (MTX), lactate dehydrogenase (LDH), uric acid (UA), and urea. They are indicative as/for the therapeutic drug (MTX), prognosis (LDH), and side effect (UA and urea). The sensing chip exhibited low detection limits of 35 nM, 25 U/L, 450 nM, and 20 μM toward the four analytes, which are much lower than their minimum contents in human serum. Furthermore, practical application of the chip was demonstrated by simultaneous detection of the four analytes in the blood plasma of rabbit. By simply replacing the modification agents, the sensing platform is expected to serve the detection of a wide range of chem/biosubstances in various fields.
Collapse
Affiliation(s)
- Liang Zhu
- School of Science, Harbin Institute of Technology, Shenzhen 518055, China
| | - Xiaoxue Liu
- School of Science, Harbin Institute of Technology, Shenzhen 518055, China
| | - Jiao Yang
- School of Science, Harbin Institute of Technology, Shenzhen 518055, China
| | - Yongcheng He
- Department of Nephrology, Shenzhen Hengsheng Hospital, Shenzhen, Guangdong 518102, China
| | - Yingchun Li
- School of Science, Harbin Institute of Technology, Shenzhen 518055, China.,College of Optoelectronic Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| |
Collapse
|
11
|
Redelinghuys MJ, Geldenhuys J, Jung H, Kock MM. Bacterial Vaginosis: Current Diagnostic Avenues and Future Opportunities. Front Cell Infect Microbiol 2020; 10:354. [PMID: 32850469 PMCID: PMC7431474 DOI: 10.3389/fcimb.2020.00354] [Citation(s) in RCA: 77] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 06/09/2020] [Indexed: 12/16/2022] Open
Abstract
A healthy female genital tract harbors a microbiome dominated by lactic acid and hydrogen peroxide producing bacteria, which provide protection against infections by maintaining a low pH. Changes in the bacterial compositions of the vaginal microbiome can lead to bacterial vaginosis (BV), which is often associated with vaginal inflammation. Bacterial vaginosis increases the risk of acquiring sexually transmitted infections (STIs) like human immunodeficiency virus (HIV) and affects women's reproductive health negatively. In pregnant women, BV can lead to chorioamnionitis and adverse pregnancy outcomes, including preterm premature rupture of the membranes and preterm birth. In order to manage BV effectively, good diagnostic procedures are required. Traditionally clinical and microscopic methods have been used to diagnose BV; however, these methods require skilled staff and time and suffer from reduced sensitivity and specificity. New diagnostics, including highly sensitive and specific point-of-care (POC) tests, treatment modalities and vaccines can be developed based on the identification of biomarkers from the growing pool of vaginal microbiome and vaginal metabolome data. In this review the current and future diagnostic avenues will be discussed.
Collapse
Affiliation(s)
- Mathys J. Redelinghuys
- School of Clinical Medicine, Wits Reproductive Health and HIV Institute, University of the Witwatersrand, Johannesburg, South Africa
| | - Janri Geldenhuys
- UP-Ampath Translational Genomics Initiative, Department of Biochemistry, Genetics and Microbiology, Faculty of Health Sciences and Faculty of Natural and Agricultural Sciences, Division of Genetics, University of Pretoria, Pretoria, South Africa
| | - Hyunsul Jung
- Department of Medical Microbiology, University of Pretoria, Pretoria, South Africa
| | - Marleen M. Kock
- Department of Medical Microbiology, University of Pretoria, Pretoria, South Africa
- Department of Medical Microbiology, Tshwane Academic Division, National Health Laboratory Service, Pretoria, South Africa
| |
Collapse
|
12
|
Paving the way for precision medicine v2.0 in intensive care by profiling necroinflammation in biofluids. Cell Death Differ 2018; 26:83-98. [PMID: 30201975 PMCID: PMC6294775 DOI: 10.1038/s41418-018-0196-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 07/16/2018] [Accepted: 08/10/2018] [Indexed: 12/21/2022] Open
Abstract
Current clinical diagnosis is typically based on a combination of approaches including clinical examination of the patient, clinical experience, physiologic and/or genetic parameters, high-tech diagnostic medical imaging, and an extended list of laboratory values mostly determined in biofluids such as blood and urine. One could consider this as precision medicine v1.0. However, recent advances in technology and better understanding of molecular mechanisms underlying disease will allow us to better characterize patients in the future. These improvements will enable us to distinguish patients who have similar clinical presentations but different cellular and molecular responses. Treatments will be able to be chosen more “precisely”, resulting in more appropriate therapy, precision medicine v2.0. In this review, we will reflect on the potential added value of recent advances in technology and a better molecular understanding of necrosis and inflammation for improving diagnosis and treatment of critically ill patients. We give a brief overview on the mutual interplay between necrosis and inflammation, which are two crucial detrimental factors in organ and/or systemic dysfunction. One of the challenges for the future will thus be the cellular and molecular profiling of necroinflammation in biofluids. The huge amount of data generated by profiling biomolecules and single cells through, for example, different omic-approaches is needed for data mining methods to allow patient-clustering and identify novel biomarkers. The real-time monitoring of biomarkers will allow continuous (re)evaluation of treatment strategies using machine learning models. Ultimately, we may be able to offer precision therapies specifically designed to target the molecular set-up of an individual patient, as has begun to be done in cancer therapeutics. Critical care mostly implies life-threatening situations involving systemic infection, inflammation and necrosis. Biofluids are an easily accessible source of liquid biopsies that can be used to monitor the evolution of the patient’s critical illness. The cellular and molecular profiling of necrosis and inflammation in biofluids using cutting-edge technologies such as realtime immunodiagnostics, next-generation sequencing and mass spectrometry will pave the way for precision medicine v2.0 in critical care. This is needed for data mining approaches to allow patientclustering, identify novel biomarkers and develop novel intervention strategies controlling necrosis and inflammation. The real-time monitoring of biomarkers will allow continued (re)evaluation of treatment strategies using machine learning models. ![]()
Collapse
|
13
|
Shen H, Qu F, Xia Y, Jiang X. Straightforward and Ultrastable Surface Modification of Microfluidic Chips with Norepinephrine Bitartrate Improves Performance in Immunoassays. Anal Chem 2018; 90:3697-3702. [PMID: 29478312 DOI: 10.1021/acs.analchem.7b05186] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Polymers are commonly used materials for microfluidic chip fabrication, because they are standardized in fabrication and low in cost. However, most polymeric materials that are readily fabricated on the industrial scale are hydrophobic, which is inconvenient for the injection and flow of the aqueous solution, resulting in poor analytical performance for biochemical assays. In this work, we present a straightforward and ultrastable surface modification process for polymeric chips. A one-step modification by using norepinephrine bitartrate monohydrate as a modification reagent is completed at room temperature. The hydrophilicity of the polymeric surfaces increases dramatically. Surface modification is stable for at least 2.5 years, allowing for autoinjection of aqueous solution into the channels. The chips are applied in the immunoassay of alpha-fetoprotein (AFP). The low nonspecific adsorption after modification results in significantly decreased background noise, optimized signal-to-noise ratios (SNR), and dramatically enhanced reproducibility of the immunoassay. Thirty clinical human serum samples are analyzed; these results strongly correlated with the values obtained using commercial test kits. We anticipate that this surface modification method can be used for immunoassay devices in analytical and biosensing technology.
Collapse
Affiliation(s)
- Haiying Shen
- School of Life Science , Beijing Institute of Technology , Beijing 100081 , People's Republic of China.,Beijing Engineering Research Center for BioNanotechnology & CAS Key Laboratory for Biological Effects of Nano-materials Nanosafety , National Center for Nanoscience and Technology , Beijing 100190 , People's Republic of China
| | - Feng Qu
- School of Life Science , Beijing Institute of Technology , Beijing 100081 , People's Republic of China
| | - Yong Xia
- Department of Clinical Laboratory , Third Affiliated Hospital of Guangzhou Medical University , Guangzhou 510150 , People's Republic of China
| | - Xingyu Jiang
- Beijing Engineering Research Center for BioNanotechnology & CAS Key Laboratory for Biological Effects of Nano-materials Nanosafety , National Center for Nanoscience and Technology , Beijing 100190 , People's Republic of China.,Department of Clinical Laboratory , Third Affiliated Hospital of Guangzhou Medical University , Guangzhou 510150 , People's Republic of China.,University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| |
Collapse
|
14
|
Booth MA, Gowers SAN, Leong CL, Rogers ML, Samper IC, Wickham AP, Boutelle MG. Chemical Monitoring in Clinical Settings: Recent Developments toward Real-Time Chemical Monitoring of Patients. Anal Chem 2017; 90:2-18. [PMID: 29083872 DOI: 10.1021/acs.analchem.7b04224] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Marsilea A Booth
- Department of Bioengineering, Imperial College London , London, SW7 2AZ, United Kingdom
| | - Sally A N Gowers
- Department of Bioengineering, Imperial College London , London, SW7 2AZ, United Kingdom
| | - Chi Leng Leong
- Department of Bioengineering, Imperial College London , London, SW7 2AZ, United Kingdom
| | - Michelle L Rogers
- Department of Bioengineering, Imperial College London , London, SW7 2AZ, United Kingdom
| | - Isabelle C Samper
- Department of Bioengineering, Imperial College London , London, SW7 2AZ, United Kingdom
| | - Aidan P Wickham
- Department of Bioengineering, Imperial College London , London, SW7 2AZ, United Kingdom
| | - Martyn G Boutelle
- Department of Bioengineering, Imperial College London , London, SW7 2AZ, United Kingdom
| |
Collapse
|