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Zhang J, Zheng T, Helalat SH, Yesibolati MN, Sun Y. Synthesis of eco-friendly multifunctional dextran microbeads for multiplexed assays. J Colloid Interface Sci 2024; 666:603-614. [PMID: 38613982 DOI: 10.1016/j.jcis.2024.04.061] [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: 01/24/2024] [Revised: 04/05/2024] [Accepted: 04/08/2024] [Indexed: 04/15/2024]
Abstract
There has been an increasing demand for simultaneous detection of multiple analytes in one sample. Microbead-based platforms have been developed for multiplexed assays. However, most of the microbeads are made of non-biodegradable synthetic polymers, leading to environmental and human health concerns. In this study, we developed an environmentally friendly dextran microbeads as a new type of multi-analyte assay platform. Biodegradable dextran was utilized as the primary material. Highly uniform magnetic dextran microspheres were successfully synthesized using the Shirasu porous glass (SPG) membrane emulsification technique. To enhance the amount of surface functional groups for ligand conjugation, we coated the dextran microbeads with a layer of dendrimers via a simple electrostatic adsorption process. Subsequently, a unique and efficient click chemistry coupling technique was developed for the fluorescence encoding of the microspheres, enabling multiplexed detection. The dextran microbeads were tested for 3-plex cytokine analysis, and exhibited excellent biocompatibility, stable coding signals, low background noise and high sensitivity.
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Affiliation(s)
- Jing Zhang
- Department of Health Technology, Technical University of Denmark, Ørsteds Plads, DK-2800 Kgs. Lyngby, Denmark
| | - Tao Zheng
- Department of Health Technology, Technical University of Denmark, Ørsteds Plads, DK-2800 Kgs. Lyngby, Denmark.
| | - Seyed Hossein Helalat
- Department of Health Technology, Technical University of Denmark, Ørsteds Plads, DK-2800 Kgs. Lyngby, Denmark
| | - Murat Nulati Yesibolati
- National Centre for Nanofabrication and Characterization, Technical University of Denmark, Ørsteds Plads, DK-2800 Kgs. Lyngby, Denmark
| | - Yi Sun
- Department of Health Technology, Technical University of Denmark, Ørsteds Plads, DK-2800 Kgs. Lyngby, Denmark.
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2
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Neumair J, Kröger M, Stütz E, Jerin C, Chaker AM, Schmidt-Weber CB, Seidel M. Flow-Based CL-SMIA for the Quantification of Protein Biomarkers from Nasal Secretions in Comparison with Sandwich ELISA. BIOSENSORS 2023; 13:670. [PMID: 37504069 PMCID: PMC10377473 DOI: 10.3390/bios13070670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 06/12/2023] [Accepted: 06/20/2023] [Indexed: 07/29/2023]
Abstract
Protein biomarkers in nasal secretions can be used as a measure to differentiate between allergies, airway diseases and infections for non-invasive diagnostics. The point-of-care quantification of biomarker levels using flow-based microarray facilitates precise and rapid diagnosis and displays the potential for targeted and effective treatment. For the first time, we developed a flow-based chemiluminescence sandwich microarray immunoassay (CL-SMIA) for the quantification of nasal interferon-beta (IFN-β) on the Microarray Chip Reader-Research (MCR-R). Polycarbonate foils are used as a cost-effective surface for immobilizing capture antibodies. By using a commercially available set of anti-human IFN-β antibodies, the CL-SMIA can be compared directly to an enzyme-linked immunosorbent assay (ELISA) performed in microtiter plates concerning the bioanalytical performance and economic issues. Pre-incubation of the sample with detection antibodies facilitates the lower consumption of detection antibodies, as this allows for a longer interaction time between the antibody and the biomarker. The direct injection of pre-incubated samples into the microarray chips eliminates the adsorption of proteins in the tubing as well as the contamination of the tubing and valves of the MCR-R with clinical samples. The small flow cell allows for a low sample volume of 50 μL. The limit of detection of 4.53 pg mL-1 was slightly increased compared to a sandwich ELISA performed on microtiter plates which were 1.60 pg mL-1. The possibility to perform the CL-SMIA in a multiplexed mode makes it a promising assay for the rapid and cost-effective non-invasive detection of biomarkers in nasal secretions.
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Affiliation(s)
- Julia Neumair
- Chair of Analytical Chemistry and Water Chemistry, TUM School of Natural Sciences, Technical University of Munich, Lichtenbergstr. 4, 85748 Garching, Germany
| | - Marie Kröger
- Chair of Analytical Chemistry and Water Chemistry, TUM School of Natural Sciences, Technical University of Munich, Lichtenbergstr. 4, 85748 Garching, Germany
| | - Evamaria Stütz
- Center of Allergy and Environment (ZAUM), Technical University of Munich and Helmholtz Center Munich, Member of the German Center of Lung Research (DZL), 80802 Munich, Germany
| | - Claudia Jerin
- Center of Allergy and Environment (ZAUM), Technical University of Munich and Helmholtz Center Munich, Member of the German Center of Lung Research (DZL), 80802 Munich, Germany
| | - Adam M Chaker
- Center of Allergy and Environment (ZAUM), Technical University of Munich and Helmholtz Center Munich, Member of the German Center of Lung Research (DZL), 80802 Munich, Germany
- TUM School of Medicine, Department of Otorhinolaryngology, Klinikum Rechts der Isar, Technical University of Munich, 81675 Munich, Germany
| | - Carsten B Schmidt-Weber
- Center of Allergy and Environment (ZAUM), Technical University of Munich and Helmholtz Center Munich, Member of the German Center of Lung Research (DZL), 80802 Munich, Germany
| | - Michael Seidel
- Chair of Analytical Chemistry and Water Chemistry, TUM School of Natural Sciences, Technical University of Munich, Lichtenbergstr. 4, 85748 Garching, Germany
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3
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Tiemeijer BM, Tel J. Hydrogels for Single-Cell Microgel Production: Recent Advances and Applications. Front Bioeng Biotechnol 2022; 10:891461. [PMID: 35782502 PMCID: PMC9247248 DOI: 10.3389/fbioe.2022.891461] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 05/09/2022] [Indexed: 12/12/2022] Open
Abstract
Single-cell techniques have become more and more incorporated in cell biological research over the past decades. Various approaches have been proposed to isolate, culture, sort, and analyze individual cells to understand cellular heterogeneity, which is at the foundation of every systematic cellular response in the human body. Microfluidics is undoubtedly the most suitable method of manipulating cells, due to its small scale, high degree of control, and gentle nature toward vulnerable cells. More specifically, the technique of microfluidic droplet production has proven to provide reproducible single-cell encapsulation with high throughput. Various in-droplet applications have been explored, ranging from immunoassays, cytotoxicity assays, and single-cell sequencing. All rely on the theoretically unlimited throughput that can be achieved and the monodispersity of each individual droplet. To make these platforms more suitable for adherent cells or to maintain spatial control after de-emulsification, hydrogels can be included during droplet production to obtain “microgels.” Over the past years, a multitude of research has focused on the possibilities these can provide. Also, as the technique matures, it is becoming clear that it will result in advantages over conventional droplet approaches. In this review, we provide a comprehensive overview on how various types of hydrogels can be incorporated into different droplet-based approaches and provide novel and more robust analytic and screening applications. We will further focus on a wide range of recently published applications for microgels and how these can be applied in cell biological research at the single- to multicell scale.
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Affiliation(s)
- B. M. Tiemeijer
- Laboratory of Immunoengineering, Department of Biomedical Engineering, TU Eindhoven, Eindhoven, Netherlands
- Institute of Complex Molecular Systems, TU Eindhoven, Eindhoven, Netherlands
| | - J. Tel
- Laboratory of Immunoengineering, Department of Biomedical Engineering, TU Eindhoven, Eindhoven, Netherlands
- Institute of Complex Molecular Systems, TU Eindhoven, Eindhoven, Netherlands
- *Correspondence: J. Tel,
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4
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Zhou Y, Liu J, Dong H, Liu Z, Wang L, Li Q, Ren J, Zhang Y, Xu M. Target-induced silver nanocluster generation for highly sensitive electrochemical aptasensor towards cell-secreted interferon-γ. Biosens Bioelectron 2022; 203:114042. [DOI: 10.1016/j.bios.2022.114042] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 01/07/2022] [Accepted: 01/24/2022] [Indexed: 11/25/2022]
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Liu C, Chu D, Kalantar‐Zadeh K, George J, Young HA, Liu G. Cytokines: From Clinical Significance to Quantification. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2004433. [PMID: 34114369 PMCID: PMC8336501 DOI: 10.1002/advs.202004433] [Citation(s) in RCA: 197] [Impact Index Per Article: 65.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 03/26/2021] [Indexed: 05/24/2023]
Abstract
Cytokines are critical mediators that oversee and regulate immune and inflammatory responses via complex networks and serve as biomarkers for many diseases. Quantification of cytokines has significant value in both clinical medicine and biology as the levels provide insights into physiological and pathological processes and can be used to aid diagnosis and treatment. Cytokines and their clinical significance are introduced from the perspective of their pro- and anti-inflammatory effects. Factors affecting cytokines quantification in biological fluids, native levels in different body fluids, sample processing and storage conditions, sensitivity to freeze-thaw, and soluble cytokine receptors are discussed. In addition, recent advances in in vitro and in vivo assays, biosensors based on different signal outputs and intracellular to extracellular protein expression are summarized. Various quantification platforms for high-sensitivity and reliable measurement of cytokines in different scenarios are discussed, and commercially available cytokine assays are compared. A discussion of challenges in the development and advancement of technologies for cytokine quantification that aim to achieve real-time multiplex cytokine analysis for point-of-care situations applicable for both biomedical research and clinical practice are discussed.
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Affiliation(s)
- Chao Liu
- School of Materials Science and EngineeringUniversity of New South WalesSydneyNSW2052Australia
| | - Dewei Chu
- School of Materials Science and EngineeringUniversity of New South WalesSydneyNSW2052Australia
| | | | - Jacob George
- Storr Liver CentreWestmead Institute of Medical ResearchUniversity of Sydney and Department of Gastroenterology and HepatologyWestmead HospitalWestmeadNSW2145Australia
| | - Howard A. Young
- Laboratory of Cancer ImmunometabolismCenter for Cancer ResearchNational Cancer Institute at FrederickFrederickMD21702USA
| | - Guozhen Liu
- School of Life and Health SciencesThe Chinese University of Hong KongShenzhen518172P. R. China
- Graduate School of Biomedical EngineeringUniversity of New South WalesSydneyNSW2052Australia
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Rani D, Singh Y, Salker M, Vu XT, Ingebrandt S, Pachauri V. Point-of-care-ready nanoscale ISFET arrays for sub-picomolar detection of cytokines in cell cultures. Anal Bioanal Chem 2020; 412:6777-6788. [PMID: 32725311 PMCID: PMC7496041 DOI: 10.1007/s00216-020-02820-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 06/21/2020] [Accepted: 07/14/2020] [Indexed: 02/08/2023]
Abstract
Rapid and frequent screening of cytokines as immunomodulation agents is necessary for precise interventions in severe pathophysiological conditions. In addition to high-sensitivity detection of such analytes in complex biological fluids such as blood, saliva, and cell culture medium samples, it is also crucial to work out miniaturized bioanalytical platforms with potential for high-density integration enabling screening of multiple analytes. In this work, we show a compact, point-of-care-ready bioanalytical platform for screening of cytokines such as interleukin-4 (IL-4) and interleukin-2 (IL-2) based on one-dimensional ion-sensitive field-effect transistors arrays (nanoISFETs) of silicon fabricated at wafer-scale via nanoimprint lithography. The nanoISFETs biofunctionalized with receptor proteins alpha IL-4 and alpha IL-2 were deployed for screening cytokine secretion in mouse T helper cell differentiation culture media, respectively. Our nanoISFETs showed robust sensor signals for specific molecular binding and can be readily deployed for real-time screening of cytokines. Quantitative analyses of the nanoISFET-based bioanalytical platform was carried out for IL-4 concentrations ranging from 25 fg/mL (1.92 fM) to 2.5 μg/mL (192 nM), showing a limit of detection down to 3-5 fM, which was found to be in agreement with ELISA results in determining IL-4 concentrations directly in complex cell culture media. Graphical abstract.
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Affiliation(s)
- Dipti Rani
- Department of Computer Sciences and Microsystem Technology, University of Applied Sciences Kaiserslautern, Amerikastrasse 1, 66482, Zweibruecken, Germany
| | - Yogesh Singh
- Institute of Medical Genetics and Applied Genomics, Eberhard-Karls University Tuebingen, Calwerstraße 7, 72076, Tübingen, Germany
| | - Madhuri Salker
- Women's Hospital, Eberhard-Karls University Tuebingen, Calwerstraße 7/6, 72076, Tübingen, Germany
| | - Xuan Thang Vu
- Department of Computer Sciences and Microsystem Technology, University of Applied Sciences Kaiserslautern, Amerikastrasse 1, 66482, Zweibruecken, Germany
- Institute of Materials in Electrical Engineering 1 (IWE1), RWTH Aachen University, Sommerfeldstrasse 24, 52074, Aachen, Germany
| | - Sven Ingebrandt
- Department of Computer Sciences and Microsystem Technology, University of Applied Sciences Kaiserslautern, Amerikastrasse 1, 66482, Zweibruecken, Germany
- Institute of Materials in Electrical Engineering 1 (IWE1), RWTH Aachen University, Sommerfeldstrasse 24, 52074, Aachen, Germany
| | - Vivek Pachauri
- Department of Computer Sciences and Microsystem Technology, University of Applied Sciences Kaiserslautern, Amerikastrasse 1, 66482, Zweibruecken, Germany.
- Institute of Materials in Electrical Engineering 1 (IWE1), RWTH Aachen University, Sommerfeldstrasse 24, 52074, Aachen, Germany.
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7
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Park S, Cho Y, Park S, Oh M, Kim D, Lim G, Park JJ. Polyurea Microcapsules with Different Phase Change Material for Thermochromic Smart Displays. CHEM LETT 2019. [DOI: 10.1246/cl.190629] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Sangki Park
- School of Polymer Science & Engineering, Chonnam National University, Gwangju 61186, Korea
| | - Yujang Cho
- School of Polymer Science & Engineering, Chonnam National University, Gwangju 61186, Korea
| | - Sanghyun Park
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana IL 61801, USA
| | - MinSun Oh
- School of Polymer Science & Engineering, Chonnam National University, Gwangju 61186, Korea
| | - Daeeun Kim
- School of Polymer Science & Engineering, Chonnam National University, Gwangju 61186, Korea
| | - Gyuntaek Lim
- School of Polymer Science & Engineering, Chonnam National University, Gwangju 61186, Korea
| | - Jong-Jin Park
- School of Polymer Science & Engineering, Chonnam National University, Gwangju 61186, Korea
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