1
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Ullah N, Bruce-Tagoe TA, Asamoah GA, Danquah MK. Multimodal Biosensing of Foodborne Pathogens. Int J Mol Sci 2024; 25:5959. [PMID: 38892147 PMCID: PMC11172999 DOI: 10.3390/ijms25115959] [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: 04/16/2024] [Revised: 05/14/2024] [Accepted: 05/27/2024] [Indexed: 06/21/2024] Open
Abstract
Microbial foodborne pathogens present significant challenges to public health and the food industry, requiring rapid and accurate detection methods to prevent infections and ensure food safety. Conventional single biosensing techniques often exhibit limitations in terms of sensitivity, specificity, and rapidity. In response, there has been a growing interest in multimodal biosensing approaches that combine multiple sensing techniques to enhance the efficacy, accuracy, and precision in detecting these pathogens. This review investigates the current state of multimodal biosensing technologies and their potential applications within the food industry. Various multimodal biosensing platforms, such as opto-electrochemical, optical nanomaterial, multiple nanomaterial-based systems, hybrid biosensing microfluidics, and microfabrication techniques are discussed. The review provides an in-depth analysis of the advantages, challenges, and future prospects of multimodal biosensing for foodborne pathogens, emphasizing its transformative potential for food safety and public health. This comprehensive analysis aims to contribute to the development of innovative strategies for combating foodborne infections and ensuring the reliability of the global food supply chain.
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Affiliation(s)
| | | | | | - Michael K. Danquah
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA; (N.U.); (T.A.B.-T.); (G.A.A.)
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2
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Nava G, Casiraghi L, Carzaniga T, Zanchetta G, Chiari M, Damin F, Bollati V, Signorini L, Delbue S, Bellini T, Buscaglia M. Digital Detection of Single Virus Particles by Multi-Spot, Label-Free Imaging Biosensor on Anti-Reflective Glass. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2300947. [PMID: 37060208 DOI: 10.1002/smll.202300947] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 03/21/2023] [Indexed: 06/19/2023]
Abstract
Rapid detection of whole virus particles in biological or environmental samples represents an unmet need for the containment of infectious diseases. Here, an optical device enabling the enumeration of single virion particles binding on antibody or aptamers immobilized on a surface with anti-reflective coating is described. In this regime, nanoparticles adhering to the sensor surface provide localized contributions to the reflected field that become detectable because of their mixing with the interfering waves in the reflection direction. Thus, these settings are exploited to realize a scan-free, label-free, micro-array-type digital assay on a disposable cartridge, in which the virion counting takes place in wide field-of-view imaging. With this approach we could quantify, by enumeration, different variants of SARS-CoV-2 virions interacting with antibodies and aptamers immobilized on different spots. For all tested variants, the aptamers showed larger affinity but lower specificity relative to the antibodies. It is found that the combination of different probes on the same surface enables increasing specificity of detection and dynamic range.
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Affiliation(s)
- Giovanni Nava
- Dipartimento di Biotecnologie Mediche e Medicina Traslazionale, Universitá degli Studi di Milano, via F.lli Cervi, 93, Segrate, Milano, 20054, Italy
| | - Luca Casiraghi
- Dipartimento di Biotecnologie Mediche e Medicina Traslazionale, Universitá degli Studi di Milano, via F.lli Cervi, 93, Segrate, Milano, 20054, Italy
| | - Thomas Carzaniga
- Dipartimento di Biotecnologie Mediche e Medicina Traslazionale, Universitá degli Studi di Milano, via F.lli Cervi, 93, Segrate, Milano, 20054, Italy
| | - Giuliano Zanchetta
- Dipartimento di Biotecnologie Mediche e Medicina Traslazionale, Universitá degli Studi di Milano, via F.lli Cervi, 93, Segrate, Milano, 20054, Italy
| | - Marcella Chiari
- Istituto di Scienze e Tecnologie Chimiche "Giulio Natta", National Research Council of Italy (SCITEC-CNR), via Mario Bianco 11, Milano, 20131, Italy
| | - Francesco Damin
- Istituto di Scienze e Tecnologie Chimiche "Giulio Natta", National Research Council of Italy (SCITEC-CNR), via Mario Bianco 11, Milano, 20131, Italy
| | - Valentina Bollati
- Dipartimento di Scienze Cliniche e di Comunitá, Universitá degli Studi di Milano, via S. Barnaba 8, Milano, 20122, Italy
| | - Lucia Signorini
- Dipartimento di Scienze Biomediche, Chirurgiche ed Odontoiatriche, Universitá degli Studi di Milano, via Pascal 36, Milano, 20133, Italy
| | - Serena Delbue
- Dipartimento di Scienze Biomediche, Chirurgiche ed Odontoiatriche, Universitá degli Studi di Milano, via Pascal 36, Milano, 20133, Italy
| | - Tommaso Bellini
- Dipartimento di Biotecnologie Mediche e Medicina Traslazionale, Universitá degli Studi di Milano, via F.lli Cervi, 93, Segrate, Milano, 20054, Italy
| | - Marco Buscaglia
- Dipartimento di Biotecnologie Mediche e Medicina Traslazionale, Universitá degli Studi di Milano, via F.lli Cervi, 93, Segrate, Milano, 20054, Italy
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3
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Abstract
This paper reviews methods for detecting proteins based on molecular digitization, i.e., the isolation and detection of single protein molecules or singulated ensembles of protein molecules. The single molecule resolution of these methods has resulted in significant improvements in the sensitivity of immunoassays beyond what was possible using traditional "analog" methods: the sensitivity of some digital immunoassays approach those of methods for measuring nucleic acids, such as the polymerase chain reaction (PCR). The greater sensitivity of digital protein detection has resulted in immuno-diagnostics with high potential societal impact, e.g., the early diagnosis and therapeutic intervention of Alzheimer's Disease. In this review, we will first provide the motivation for developing digital protein detection methods given the limitations in the sensitivity of analog methods. We will describe the paradigm shift catalyzed by single molecule detection, and will describe in detail one digital approach - which we call digital bead assays (DBA) - based on the capture and labeling of proteins on beads, identifying "on" and "off" beads, and quantification using Poisson statistics. DBA based on the single molecule array (Simoa) technology have sensitivities down to attomolar concentrations, equating to ∼10 proteins in a 200 μL sample. We will describe the concept behind DBA, the different single molecule labels used, the ways of analyzing beads (imaging of arrays and flow), the binding reagents and substrates used, and integration of these technologies into fully automated and miniaturized systems. We provide an overview of emerging approaches to digital protein detection, including those based on digital detection of nucleic acids labels, single nanoparticle detection, measurements using nanopores, and methods that exploit the kinetics of single molecule binding. We outline the initial impact of digital protein detection on clinical measurements, highlighting the importance of customized assay development and translational clinical research. We highlight the use of DBA in the measurement of neurological protein biomarkers in blood, and how these higher sensitivity methods are changing the diagnosis and treatment of neurological diseases. We conclude by summarizing the status of digital protein detection and suggest how the lab-on-a-chip community might drive future innovations in this field.
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Affiliation(s)
- David C Duffy
- Quanterix Corporation, 900 Middlesex Turnpike, Billerica, MA 01821, USA.
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4
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Zhou X, Zheng B. Surface modification for improving immunoassay sensitivity. LAB ON A CHIP 2023; 23:1151-1168. [PMID: 36636910 DOI: 10.1039/d2lc00811d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Immunoassays are widely performed in many fields such as biomarker discovery, proteomics, drug development, and clinical diagnosis. There is a growing need for high sensitivity of immunoassays to detect low abundance analytes. As a result, great effort has been made to improve the quality of surfaces, on which the immunoassay is performed. In this review article, we summarize the recent progress in surface modification strategies for improving the sensitivity of immunoassays. The surface modification strategies can be categorized into two groups: antifouling coatings to reduce background noise and nanostructured surfaces to amplify the signals. The first part of the review summarizes the common antifouling coating techniques to prevent nonspecific binding and reduce background noise. The techniques include hydrophilic polymer based self-assembled monomers, polymer brushes, and surface attached hydrogels, and omniphobicity based perfluorinated surfaces. In the second part, some common nanostructured surfaces to amplify the specific detection signals are introduced, including nanoparticle functionalized surfaces, two dimensional (2D) nanoarrays, and 2D nanomaterial coatings. The third part discusses the surface modification techniques for digital immunoassays. In the end, the challenges and the future perspectives of the surface modification techniques for immunoassays are presented.
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Affiliation(s)
- Xiaohu Zhou
- Institute for Cell Analysis, Shenzhen Bay Laboratory, Shenzhen 518132, China.
| | - Bo Zheng
- Institute for Cell Analysis, Shenzhen Bay Laboratory, Shenzhen 518132, China.
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5
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An T, Wen J, Dong Z, Zhang Y, Zhang J, Qin F, Wang Y, Zhao X. Plasmonic Biosensors with Nanostructure for Healthcare Monitoring and Diseases Diagnosis. SENSORS (BASEL, SWITZERLAND) 2022; 23:445. [PMID: 36617043 PMCID: PMC9824517 DOI: 10.3390/s23010445] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/20/2022] [Accepted: 12/20/2022] [Indexed: 06/17/2023]
Abstract
Nanophotonics has been widely utilized in enhanced molecularspectroscopy or mediated chemical reaction, which has major applications in the field of enhancing sensing and enables opportunities in developing healthcare monitoring. This review presents an updated overview of the recent exciting advances of plasmonic biosensors in the healthcare area. Manufacturing, enhancements and applications of plasmonic biosensors are discussed, with particular focus on nanolisted main preparation methods of various nanostructures, such as chemical synthesis, lithography, nanosphere lithography, nanoimprint lithography, etc., and describing their respective advances and challenges from practical applications of plasmon biosensors. Based on these sensing structures, different types of plasmonic biosensors are summarized regarding detecting cancer biomarkers, body fluid, temperature, gas and COVID-19. Last, the existing challenges and prospects of plasmonic biosensors combined with machine learning, mega data analysis and prediction are surveyed.
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Affiliation(s)
- Tongge An
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Jiahong Wen
- The College of Electronics and Information, Hangzhou Dianzi University, Hangzhou 310018, China
- Shangyu Institute of Science and Engineering, Hangzhou Dianzi University, Shaoxing 312000, China
| | - Zhichao Dong
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Yongjun Zhang
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Jian Zhang
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Faxiang Qin
- Institute for Composites Science Innovation, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Yaxin Wang
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Xiaoyu Zhao
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
- Zhejiang Laboratory, Hangzhou 311100, China
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6
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Wang W, Wu J, Zhao Z, Li Q, Huo B, Sun X, Han D, Liu M, Cai LC, Peng Y, Bai J, Gao Z. Ultrasensitive Automatic Detection of Small Molecules by Membrane Imaging of Single Molecule Assays. ACS APPLIED MATERIALS & INTERFACES 2022; 14:54914-54923. [PMID: 36459426 DOI: 10.1021/acsami.2c15373] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Determination of trace amounts of targets or even a single molecule target has always been a challenge in the detection field. Digital measurement methods established for single molecule counting of proteins, such as single molecule arrays (Simoa) or dropcast single molecule assays (dSimoa), are not suitable for detecting small molecule, because of the limited category of small molecule antibodies and the weak signal that can be captured. To address this issue, we have developed a strategy for single molecule detection of small molecules, called small molecule detection with single molecule assays (smSimoa). In this strategy, an aptamer is used as a recognition element, and an addressable DNA Nanoflower (DNF) attached on the magnetic beads surface, which exhibit fluorescence imaging, is employed as the output signal. Accompanied by digital imaging and automated counting analysis, E2 at the attomolar level can be measured. The smSimoa breaks the barrier of small molecule detection concentration and provides a basis for high throughput detection of multiple substances with fluorescence encoded magnetic beads.
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Affiliation(s)
- Weiya Wang
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, People's Republic of China
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Research Center for Functional Foods, School of Food Science Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi 214122, Jiangsu, People's Republic of China
| | - Jin Wu
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, People's Republic of China
| | - Zunquan Zhao
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, People's Republic of China
| | - Qiaofeng Li
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, People's Republic of China
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Research Center for Functional Foods, School of Food Science Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi 214122, Jiangsu, People's Republic of China
| | - Bingyang Huo
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, People's Republic of China
| | - Xuan Sun
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, People's Republic of China
| | - Dianpeng Han
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, People's Republic of China
| | - Mingzhu Liu
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, People's Republic of China
| | - Ling Chao Cai
- International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, Jiangsu, People's Republic of China
| | - Yuan Peng
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, People's Republic of China
| | - Jialei Bai
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, People's Republic of China
| | - Zhixian Gao
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, People's Republic of China
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7
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Xu D, Di K, Fan B, Wu J, Gu X, Sun Y, Khan A, Li P, Li Z. MicroRNAs in extracellular vesicles: Sorting mechanisms, diagnostic value, isolation, and detection technology. Front Bioeng Biotechnol 2022; 10:948959. [PMID: 36324901 PMCID: PMC9618890 DOI: 10.3389/fbioe.2022.948959] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 09/30/2022] [Indexed: 11/13/2022] Open
Abstract
MicroRNAs (miRNAs) are a class of short, single-stranded, noncoding RNAs, with a length of about 18–22 nucleotides. Extracellular vesicles (EVs) are derived from cells and play a vital role in the development of diseases and can be used as biomarkers for liquid biopsy, as they are the carriers of miRNA. Existing studies have found that most of the functions of miRNA are mainly realized through intercellular transmission of EVs, which can protect and sort miRNAs. Meanwhile, detection sensitivity and specificity of EV-derived miRNA are higher than those of conventional serum biomarkers. In recent years, EVs have been expected to become a new marker for liquid biopsy. This review summarizes recent progress in several aspects of EVs, including sorting mechanisms, diagnostic value, and technology for isolation of EVs and detection of EV-derived miRNAs. In addition, the study reviews challenges and future research avenues in the field of EVs, providing a basis for the application of EV-derived miRNAs as a disease marker to be used in clinical diagnosis and even for the development of point-of-care testing (POCT) platforms.
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Affiliation(s)
- Dongjie Xu
- College of Animal Science, Yangtze University, Jingzhou, China
| | - Kaili Di
- Department of Laboratory Medicine, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China
| | - Boyue Fan
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Jie Wu
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Xinrui Gu
- Department of Laboratory Medicine, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China
| | - Yifan Sun
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Adeel Khan
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, National Demonstration Center for Experimental Biomedical Engineering Education (Southeast University), Southeast University, Nanjing, China
| | - Peng Li
- College of Animal Science, Yangtze University, Jingzhou, China
- *Correspondence: Peng Li, ; Zhiyang Li,
| | - Zhiyang Li
- Department of Laboratory Medicine, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China
- *Correspondence: Peng Li, ; Zhiyang Li,
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8
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Attomolar sensitivity microRNA detection using real-time digital microarrays. Sci Rep 2022; 12:16220. [PMID: 36171215 PMCID: PMC9519543 DOI: 10.1038/s41598-022-19912-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 09/06/2022] [Indexed: 11/08/2022] Open
Abstract
MicroRNAs (miRNAs) are a family of noncoding, functional RNAs. With recent developments in molecular biology, miRNA detection has attracted significant interest, as hundreds of miRNAs and their expression levels have shown to be linked to various diseases such as infections, cardiovascular disorders and cancers. A powerful and high throughput tool for nucleic acid detection is the DNA microarray technology. However, conventional methods do not meet the demands in sensitivity and specificity, presenting significant challenges for the adaptation of miRNA detection for diagnostic applications. In this study, we developed a highly sensitive and multiplexed digital microarray using plasmonic gold nanorods as labels. For proof of concept studies, we conducted experiments with two miRNAs, miRNA-451a (miR-451) and miRNA-223-3p (miR-223). We demonstrated improvements in sensitivity in comparison to traditional end-point assays that employ capture on solid phase support, by implementing real-time tracking of the target molecules on the sensor surface. Particle tracking overcomes the sensitivity limitations for detection of low-abundance biomarkers in the presence of low-affinity but high-abundance background molecules, where endpoint assays fall short. The absolute lowest measured concentration was 100 aM. The measured detection limit being well above the blank samples, we performed theoretical calculations for an extrapolated limit of detection (LOD). The dynamic tracking improved the extrapolated LODs from femtomolar range to \documentclass[12pt]{minimal}
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\begin{document}$$\sim$$\end{document}∼ 10 attomolar (less than 1300 copies in 0.2 ml of sample) for both miRNAs and the total incubation time was decreased from 5 h to 35 min.
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Lyu PT, Li QY, Wu P, Sun C, Kang B, Chen HY, Xu JJ. Decrypting Material Performance by Wide-field Femtosecond Interferometric Imaging of Energy Carrier Evolution. J Am Chem Soc 2022; 144:13928-13937. [PMID: 35866699 DOI: 10.1021/jacs.2c05735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Energy carrier evolution is crucial for material performance. Ultrafast microscopy has been widely applied to visualize the spatiotemporal evolution of energy carriers. However, direct imaging of a small amount of energy carriers on the nanoscale remains difficult due to extremely weak transient signals. Here, we present a method for ultrasensitive and high-throughput imaging of energy carrier evolution in space and time. This method combines femtosecond pump-probe techniques with interferometric scattering microscopy (iSCAT), named Femto-iSCAT. The interferometric principle and unique spatially modulated contrast enhancement enable the exploration of new science. We address three important and challenging problems: transport of different energy carriers at various interfaces, heterogeneous hot-electron distribution and relaxation in single plasmonic resonators, and distinct structure-dependent edge-state dynamics of carriers and excitons in optoelectronic semiconductors. Femto-iSCAT holds great potential as a universal tool for ultrasensitive imaging of energy carrier evolution in space and time.
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Affiliation(s)
- Pin-Tian Lyu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Qing-Yue Li
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Pei Wu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Chao Sun
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Bin Kang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Hong-Yuan Chen
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Jing-Juan Xu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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10
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Kimura H, Asano R. Strategies to simplify operation procedures for applying labeled antibody-based immunosensors to point-of-care testing. Anal Biochem 2022; 654:114806. [PMID: 35835209 DOI: 10.1016/j.ab.2022.114806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 06/12/2022] [Accepted: 07/07/2022] [Indexed: 11/01/2022]
Abstract
Point-of-care testing (POCT) is an ideal testing format for the rapid and on-site detection of analytes in patients, and facilitates disease diagnosis and monitoring. Molecular recognition elements are required for the specific detection of analytes, and biosensors that use antibodies as the molecular recognition elements are called immunosensors. Traditional immunosensors such as sandwich enzyme-linked immunosorbent assay (ELISA) require complicated procedures to form immunocomplexes consisting of detection antibodies, analytes, and capture antibodies. They also require long incubation times, washing procedures, and large and expensive specialized equipment that must be operated by laboratory technicians. Immunosensors for POCT should be systems that use relatively small pieces of equipment and do not require special training. In this review, to help in the construction of immunosensors for POCT, we have summarized the recently reported strategies for simplifying the operation, incubation, and washing procedures. We focused on the optical and electrochemical detection principles of immunosensors, compared the strategies for operation, sensitivity, and detection devices and discussed the ideal system. Combining detection devices that can be fabricated inexpensively and strategies that enable simplification of operation procedures and enhance sensitivities will contribute to the development of immunosensors for POCT.
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Affiliation(s)
- Hayato Kimura
- Department of Biotechnology and Life Science, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Tokyo, 184-8588, Japan
| | - Ryutaro Asano
- Department of Biotechnology and Life Science, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Tokyo, 184-8588, Japan; Institute of Global Innovation Research, Tokyo University of Agriculture and Technology, Tokyo, 184-8588, Japan.
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11
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Liu Y, Ye H, Huynh H, Xie C, Kang P, Kahn JS, Qin Z. Digital plasmonic nanobubble detection for rapid and ultrasensitive virus diagnostics. Nat Commun 2022; 13:1687. [PMID: 35354801 PMCID: PMC8967834 DOI: 10.1038/s41467-022-29025-w] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 02/01/2022] [Indexed: 12/28/2022] Open
Abstract
Rapid and sensitive diagnostics of infectious diseases is an urgent and unmet need as evidenced by the COVID-19 pandemic. Here, we report a strategy, based on DIgitAl plasMONic nanobubble Detection (DIAMOND), to address this need. Plasmonic nanobubbles are transient vapor bubbles generated by laser heating of plasmonic nanoparticles (NPs) and allow single-NP detection. Using gold NPs as labels and an optofluidic setup, we demonstrate that DIAMOND achieves compartment-free digital counting and works on homogeneous immunoassays without separation and amplification steps. DIAMOND allows specific detection of respiratory syncytial virus spiked in nasal swab samples and achieves a detection limit of ~100 PFU/mL (equivalent to 1 RNA copy/µL), which is competitive with digital isothermal amplification for virus detection. Therefore, DIAMOND has the advantages including one-step and single-NP detection, direct sensing of intact viruses at room temperature, and no complex liquid handling, and is a platform technology for rapid and ultrasensitive diagnostics.
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Affiliation(s)
- Yaning Liu
- Department of Mechanical Engineering, University of Texas at Dallas, Richardson, TX, 75080, USA
| | - Haihang Ye
- Department of Mechanical Engineering, University of Texas at Dallas, Richardson, TX, 75080, USA.
| | - HoangDinh Huynh
- Departments of Pediatrics, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX, 75390, USA
| | - Chen Xie
- Department of Mechanical Engineering, University of Texas at Dallas, Richardson, TX, 75080, USA
| | - Peiyuan Kang
- Department of Mechanical Engineering, University of Texas at Dallas, Richardson, TX, 75080, USA
| | - Jeffrey S Kahn
- Departments of Pediatrics, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX, 75390, USA
- Departments of Microbiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX, 75390, USA
| | - Zhenpeng Qin
- Department of Surgery, University of Texas Southwestern Medical Center, 5323 Harry Lines Blvd, Dallas, TX, 75390, USA.
- Department of Bioengineering, University of Texas at Dallas, Richardson, TX, 75080, USA.
- Center for Advanced Pain Studies, University of Texas at Dallas, Richardson, TX, 75080, USA.
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12
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Che C, Xue R, Li N, Gupta P, Wang X, Zhao B, Singamaneni S, Nie S, Cunningham BT. Accelerated Digital Biodetection Using Magneto-plasmonic Nanoparticle-Coupled Photonic Resonator Absorption Microscopy. ACS NANO 2022; 16:2345-2354. [PMID: 35040633 DOI: 10.1021/acsnano.1c08569] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Rapid, ultrasensitive, and selective quantification of circulating microRNA (miRNA) biomarkers in body fluids is increasingly deployed in early cancer diagnosis, prognosis, and therapy monitoring. While nanoparticle tags enable detection of nucleic acid or protein biomarkers with digital resolution and subfemtomolar detection limits without enzymatic amplification, the response time of these assays is typically dominated by diffusion-limited transport of the analytes or nanotags to the biosensor surface. Here, we present a magnetic activate capture and digital counting (mAC+DC) approach that utilizes magneto-plasmonic nanoparticles (MPNPs) to accelerate single-molecule sensing, demonstrated by miRNA detection via toehold-mediated strand displacement. Spiky Fe3O4@Au MPNPs with immobilized target-specific probes are "activated" by binding with miRNA targets, followed by magnetically driven transport through the bulk fluid toward nanoparticle capture probes on a photonic crystal (PC). By spectrally matching the localized surface plasmon resonance of the MPNPs to the PC-guided resonance, each captured MPNP locally quenches the PC reflection efficiency, thus enabling captured MPNPs to be individually visualized with high contrast for counting. We demonstrate quantification of the miR-375 cancer biomarker directly from unprocessed human serum with a 1 min response time, a detection limit of 61.9 aM, a broad dynamic range (100 aM to 10 pM), and a single-base mismatch selectivity. The approach is well-suited for minimally invasive biomarker quantification, enabling potential applications in point-of-care testing with short sample-to-answer time.
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Affiliation(s)
- Congnyu Che
- Department of Bioengineering, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
- Nick Holonyak Micro and Nanotechnology Laboratory, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
| | - Ruiyang Xue
- Department of Materials Science and Engineering, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
| | - Nantao Li
- Nick Holonyak Micro and Nanotechnology Laboratory, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
- Department of Electrical and Computer Engineering, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
| | - Prashant Gupta
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, Missouri 63031, United States
| | - Xiaojing Wang
- Nick Holonyak Micro and Nanotechnology Laboratory, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
| | - Bin Zhao
- Nick Holonyak Micro and Nanotechnology Laboratory, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
| | - Srikanth Singamaneni
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, Missouri 63031, United States
| | - Shuming Nie
- Department of Bioengineering, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
- Department of Materials Science and Engineering, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
- Department of Electrical and Computer Engineering, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
- Department of Chemistry, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
| | - Brian T Cunningham
- Department of Bioengineering, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
- Nick Holonyak Micro and Nanotechnology Laboratory, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
- Department of Electrical and Computer Engineering, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
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13
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Xiong Y, Li N, Che C, Wang W, Barya P, Liu W, Liu L, Wang X, Wu S, Hu H, Cunningham BT. Microscopies Enabled by Photonic Metamaterials. SENSORS (BASEL, SWITZERLAND) 2022; 22:1086. [PMID: 35161831 PMCID: PMC8840465 DOI: 10.3390/s22031086] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Revised: 01/23/2022] [Accepted: 01/26/2022] [Indexed: 11/16/2022]
Abstract
In recent years, the biosensor research community has made rapid progress in the development of nanostructured materials capable of amplifying the interaction between light and biological matter. A common objective is to concentrate the electromagnetic energy associated with light into nanometer-scale volumes that, in many cases, can extend below the conventional Abbé diffraction limit. Dating back to the first application of surface plasmon resonance (SPR) for label-free detection of biomolecular interactions, resonant optical structures, including waveguides, ring resonators, and photonic crystals, have proven to be effective conduits for a wide range of optical enhancement effects that include enhanced excitation of photon emitters (such as quantum dots, organic dyes, and fluorescent proteins), enhanced extraction from photon emitters, enhanced optical absorption, and enhanced optical scattering (such as from Raman-scatterers and nanoparticles). The application of photonic metamaterials as a means for enhancing contrast in microscopy is a recent technological development. Through their ability to generate surface-localized and resonantly enhanced electromagnetic fields, photonic metamaterials are an effective surface for magnifying absorption, photon emission, and scattering associated with biological materials while an imaging system records spatial and temporal patterns. By replacing the conventional glass microscope slide with a photonic metamaterial, new forms of contrast and enhanced signal-to-noise are obtained for applications that include cancer diagnostics, infectious disease diagnostics, cell membrane imaging, biomolecular interaction analysis, and drug discovery. This paper will review the current state of the art in which photonic metamaterial surfaces are utilized in the context of microscopy.
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Affiliation(s)
- Yanyu Xiong
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Champaign, IL 61822, USA; (Y.X.); (N.L.); (P.B.); (W.L.); (L.L.)
- Holonyak Micro and Nanotechnology Laboratory, Champaign, IL 61822, USA; (C.C.); (W.W.); (X.W.)
| | - Nantao Li
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Champaign, IL 61822, USA; (Y.X.); (N.L.); (P.B.); (W.L.); (L.L.)
- Holonyak Micro and Nanotechnology Laboratory, Champaign, IL 61822, USA; (C.C.); (W.W.); (X.W.)
| | - Congnyu Che
- Holonyak Micro and Nanotechnology Laboratory, Champaign, IL 61822, USA; (C.C.); (W.W.); (X.W.)
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Champaign, IL 61822, USA
| | - Weijing Wang
- Holonyak Micro and Nanotechnology Laboratory, Champaign, IL 61822, USA; (C.C.); (W.W.); (X.W.)
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Champaign, IL 61822, USA
| | - Priyash Barya
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Champaign, IL 61822, USA; (Y.X.); (N.L.); (P.B.); (W.L.); (L.L.)
- Holonyak Micro and Nanotechnology Laboratory, Champaign, IL 61822, USA; (C.C.); (W.W.); (X.W.)
| | - Weinan Liu
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Champaign, IL 61822, USA; (Y.X.); (N.L.); (P.B.); (W.L.); (L.L.)
- Holonyak Micro and Nanotechnology Laboratory, Champaign, IL 61822, USA; (C.C.); (W.W.); (X.W.)
| | - Leyang Liu
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Champaign, IL 61822, USA; (Y.X.); (N.L.); (P.B.); (W.L.); (L.L.)
- Holonyak Micro and Nanotechnology Laboratory, Champaign, IL 61822, USA; (C.C.); (W.W.); (X.W.)
| | - Xiaojing Wang
- Holonyak Micro and Nanotechnology Laboratory, Champaign, IL 61822, USA; (C.C.); (W.W.); (X.W.)
- Carl R. Woese Institute for Genomic Biology, Urbana, IL 61801, USA
| | - Shaoxiong Wu
- Zhejiang University-University of Illinois at Urbana-Champaign Institute, International Campus, Zhejiang University, Haining 314400, China; (S.W.); (H.H.)
| | - Huan Hu
- Zhejiang University-University of Illinois at Urbana-Champaign Institute, International Campus, Zhejiang University, Haining 314400, China; (S.W.); (H.H.)
- State Key Laboratory of Fluid Power & Mechatronic Systems, Zhejiang University, Hangzhou 310027, China
| | - Brian T. Cunningham
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Champaign, IL 61822, USA; (Y.X.); (N.L.); (P.B.); (W.L.); (L.L.)
- Holonyak Micro and Nanotechnology Laboratory, Champaign, IL 61822, USA; (C.C.); (W.W.); (X.W.)
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Champaign, IL 61822, USA
- Carl R. Woese Institute for Genomic Biology, Urbana, IL 61801, USA
- Cancer Center at Illinois, Urbana, IL 61801, USA
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14
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Bakhshpour M, Chiodi E, Celebi I, Saylan Y, Ünlü NL, Ünlü MS, Denizli A. Sensitive and real-time detection of IgG using interferometric reflecting imaging sensor system. Biosens Bioelectron 2022; 201:113961. [PMID: 35026547 DOI: 10.1016/j.bios.2021.113961] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 12/20/2021] [Accepted: 12/31/2021] [Indexed: 11/16/2022]
Abstract
Considering the limitations of well-known traditional detection techniques, innovative research studies have focused on the development of new sensors to offer label-free, highly sensitive, real-time, low-cost, and rapid detection for biomolecular interactions. In this study, we demonstrate immunoglobulin G (IgG) detection in aqueous solutions by using real-time and label-free kinetic measurements of the Interferometric Reflectance Imaging Sensor (IRIS) system. By performing kinetic characterization experiments, the sensor's performance is comprehensively evaluated and a high correlation coefficient value (>0.94) is obtained in the IgG concentration range of 1-50 μg/mL with a low detection limit (0.25 μg/mL or 1.67 nM). Moreover, the highly sensitive imaging system ensures accurate quantification and reliable validation of recorded binding events, offering new perspectives in terms of direct biomarker detection for clinical applications.
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Affiliation(s)
- Monireh Bakhshpour
- Hacettepe University, Department of Chemistry, Ankara, Turkey; Boston University, Department of Electrical and Computer Engineering, Boston, MA, United States
| | - Elisa Chiodi
- Boston University, Department of Electrical and Computer Engineering, Boston, MA, United States
| | - Iris Celebi
- Boston University, Department of Electrical and Computer Engineering, Boston, MA, United States
| | - Yeşeren Saylan
- Hacettepe University, Department of Chemistry, Ankara, Turkey
| | - Nese Lortlar Ünlü
- Boston University, Department of Biomedical Engineering, Boston, MA, United States
| | - M Selim Ünlü
- Boston University, Department of Electrical and Computer Engineering, Boston, MA, United States; Boston University, Department of Biomedical Engineering, Boston, MA, United States
| | - Adil Denizli
- Hacettepe University, Department of Chemistry, Ankara, Turkey.
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15
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Zheng J, Cheng X, Zhang H, Bai X, Ai R, Shao L, Wang J. Gold Nanorods: The Most Versatile Plasmonic Nanoparticles. Chem Rev 2021; 121:13342-13453. [PMID: 34569789 DOI: 10.1021/acs.chemrev.1c00422] [Citation(s) in RCA: 148] [Impact Index Per Article: 49.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Gold nanorods (NRs), pseudo-one-dimensional rod-shaped nanoparticles (NPs), have become one of the burgeoning materials in the recent years due to their anisotropic shape and adjustable plasmonic properties. With the continuous improvement in synthetic methods, a variety of materials have been attached around Au NRs to achieve unexpected or improved plasmonic properties and explore state-of-the-art technologies. In this review, we comprehensively summarize the latest progress on Au NRs, the most versatile anisotropic plasmonic NPs. We present a representative overview of the advances in the synthetic strategies and outline an extensive catalogue of Au-NR-based heterostructures with tailored architectures and special functionalities. The bottom-up assembly of Au NRs into preprogrammed metastructures is then discussed, as well as the design principles. We also provide a systematic elucidation of the different plasmonic properties associated with the Au-NR-based structures, followed by a discussion of the promising applications of Au NRs in various fields. We finally discuss the future research directions and challenges of Au NRs.
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Affiliation(s)
- Jiapeng Zheng
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR 999077, China
| | - Xizhe Cheng
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR 999077, China
| | - Han Zhang
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR 999077, China
| | - Xiaopeng Bai
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR 999077, China
| | - Ruoqi Ai
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR 999077, China
| | - Lei Shao
- Beijing Computational Science Research Center, Beijing 100193, China
| | - Jianfang Wang
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR 999077, China
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16
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Zhang L, Fan W, Jia D, Feng Q, Ren W, Liu C. Microchamber-Free Digital Flow Cytometric Analysis of T4 Polynucleotide Kinase Phosphatase Based on Single-Enzyme-to-Single-Bead Space-Confined Reaction. Anal Chem 2021; 93:14828-14836. [PMID: 34713697 DOI: 10.1021/acs.analchem.1c03724] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Digital bioassays have attracted extensive attention in biomedical applications due to their ultrahigh sensitivity. However, traditional digital bioassays require numerous microchambers such as droplets or microwells, which restricts their application scope. Herein, we propose a microchamber-free flow cytometric method for the digital quantification of T4 polynucleotide kinase phosphatase (T4 PNKP) based on an unprecedented phenomenon that each T4 PNKP molecule-catalyzed reaction can be spatially self-confined on a single microbead, which ultimately enables the one-target-to-one-fluorescence-positive microbead digital signal transduction. The digital signal-readout mode can clearly detect T4 PNKP concentrations as low as 1.28 × 10-10 U/μL, making it most sensitive method to date. Significantly, T4 PNKP can be specifically distinguished from other phosphatases and nucleases in complex samples by digitally counting the fluorescence-positive microbeads, which cannot be realized by traditional bulk measurement-based methods. Taking advantage of the novel space-confined enzymatic feature of T4 PNKP, this digital mechanism can use T4 PNKP as the enzyme label to fabricate digital sensing systems toward various biomolecules such as digital enzyme-linked immunosorbent assay (ELISA). Therefore, this work not only enlarges the toolbox for high-sensitivity biomolecule detection but also opens new gates to fabricate next-generation digital assays.
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Affiliation(s)
- Lijun Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province; School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an 710119, Shaanxi Province, P. R. China
| | - Wenjiao Fan
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province; School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an 710119, Shaanxi Province, P. R. China
| | - Dailu Jia
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province; School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an 710119, Shaanxi Province, P. R. China
| | - Qinya Feng
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province; School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an 710119, Shaanxi Province, P. R. China
| | - Wei Ren
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province; School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an 710119, Shaanxi Province, P. R. China
| | - Chenghui Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province; School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an 710119, Shaanxi Province, P. R. China
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17
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Priest L, Peters JS, Kukura P. Scattering-based Light Microscopy: From Metal Nanoparticles to Single Proteins. Chem Rev 2021; 121:11937-11970. [PMID: 34587448 PMCID: PMC8517954 DOI: 10.1021/acs.chemrev.1c00271] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Indexed: 02/02/2023]
Abstract
Our ability to detect, image, and quantify nanoscopic objects and molecules with visible light has undergone dramatic improvements over the past few decades. While fluorescence has historically been the go-to contrast mechanism for ultrasensitive light microscopy due to its superior background suppression and specificity, recent developments based on light scattering have reached single-molecule sensitivity. They also have the advantages of universal applicability and the ability to obtain information about the species of interest beyond its presence and location. Many of the recent advances are driven by novel approaches to illumination, detection, and background suppression, all aimed at isolating and maximizing the signal of interest. Here, we review these developments grouped according to the basic principles used, namely darkfield imaging, interferometric detection, and surface plasmon resonance microscopy.
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Affiliation(s)
| | | | - Philipp Kukura
- Physical and Theoretical
Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, United Kingdom
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18
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Li N, Canady TD, Huang Q, Wang X, Fried GA, Cunningham BT. Photonic resonator interferometric scattering microscopy. Nat Commun 2021; 12:1744. [PMID: 33741998 PMCID: PMC7979857 DOI: 10.1038/s41467-021-21999-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 02/04/2021] [Indexed: 12/13/2022] Open
Abstract
Interferometric scattering microscopy is increasingly employed in biomedical research owing to its extraordinary capability of detecting nano-objects individually through their intrinsic elastic scattering. To significantly improve the signal-to-noise ratio without increasing illumination intensity, we developed photonic resonator interferometric scattering microscopy (PRISM) in which a dielectric photonic crystal (PC) resonator is utilized as the sample substrate. The scattered light is amplified by the PC through resonant near-field enhancement, which then interferes with the <1% transmitted light to create a large intensity contrast. Importantly, the scattered photons assume the wavevectors delineated by PC's photonic band structure, resulting in the ability to utilize a non-immersion objective without significant loss at illumination density as low as 25 W cm-2. An analytical model of the scattering process is discussed, followed by demonstration of virus and protein detection. The results showcase the promise of nanophotonic surfaces in the development of resonance-enhanced interferometric microscopies.
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Affiliation(s)
- Nantao Li
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Taylor D Canady
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Qinglan Huang
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Xing Wang
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Glenn A Fried
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Brian T Cunningham
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA.
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL, USA.
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA.
- Cancer Center at Illinois, Urbana, IL, USA.
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19
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Liu Y, Ye H, Huynh H, Kang P, Xie C, Kahn JS, Qin Z. Single-Particle Counting Based on Digital Plasmonic Nanobubble Detection for Rapid and Ultrasensitive Diagnostics. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2021. [PMID: 33655274 DOI: 10.1101/2021.02.18.21252027] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Rapid and sensitive diagnostics of infectious diseases is an urgent and unmet need as evidenced by the COVID-19 pandemic. Here we report a novel strategy, based on DIgitAl plasMONic nanobubble Detection (DIAMOND), to address these gaps. Plasmonic nanobubbles are transient vapor bubbles generated by laser heating of plasmonic nanoparticles and allow single-particle detection. Using gold nanoparticles labels and an optofluidic setup, we demonstrate that DIAMOND achieves a compartment-free digital counting and works on homogeneous assays without separation and amplification steps. When applied to the respiratory syncytial virus diagnostics, DIAMOND is 150 times more sensitive than commercial lateral flow assays and completes measurements within 2 minutes. Our method opens new possibilities to develop single-particle digital detection methods and facilitate rapid and ultrasensitive diagnostics. One Sentence Summary Single-particle digital plasmonic nanobubble detection allows rapid and ultrasensitive detection of viruses in a one-step homogeneous assay.
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20
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Yang KS, Lin HY, Curley C, Welch MW, Wolpin B, Lee H, Weissleder R, Im H, Castro CM. Bead-Based Extracellular Vesicle Analysis Using Flow Cytometry. ADVANCED BIOSYSTEMS 2020; 4:e2000203. [PMID: 33103361 PMCID: PMC7718389 DOI: 10.1002/adbi.202000203] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 10/08/2020] [Indexed: 01/09/2023]
Abstract
Extracellular vesicles (EVs) represent promising circulating biomarkers for cancers, but their high-throughput analyses in clinical settings prove challenging due to lack of simple, fast, and robust EV assays. Here, a bead-based EV assay detected by flow cytometry is described, which integrates EV capture using microbeads with EV protein analyses by flow cytometry. The assay is fast (<4 h for 48 samples), robust, and compatible with conventional flow cytometry instruments for high-throughput EV analysis. With the method, a panel of pancreatic cancer biomarkers in EVs from plasma samples of pancreatic cancer patients is successfully analyzed. The assay is readily translatable to other biomarkers or cancer types and can be run with standard materials on conventional flow cytometers, making it highly flexible and adaptable to diverse research and clinical needs.
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Affiliation(s)
- Katherine S. Yang
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA 02114, USA
- Department of Radiology, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Hsing-Ying Lin
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Caleigh Curley
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA 02114, USA
| | | | | | - Hakho Lee
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA 02114, USA
- Department of Radiology, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Ralph Weissleder
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA 02114, USA
- Department of Radiology, Massachusetts General Hospital, Boston, MA, 02114, USA
- Department of Systems Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Hyungsoon Im
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA 02114, USA
- Department of Radiology, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Cesar M. Castro
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA 02114, USA
- Massachusetts General Hospital Cancer Center, Boston, MA 02114, USA
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21
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Yurdakul C, Ünlü MS. Computational nanosensing from defocus in single particle interferometric reflectance microscopy. OPTICS LETTERS 2020; 45:6546-6549. [PMID: 33258864 DOI: 10.1364/ol.409458] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 10/25/2020] [Indexed: 06/12/2023]
Abstract
Single particle interferometric reflectance (SPIR) microscopy has been studied as a powerful imaging platform for label-free and highly sensitive biological nanoparticle detection and characterization. SPIR's interferometric nature yields a unique 3D defocus intensity profile of the nanoparticles over a large field of view. Here, we utilize this defocus information to recover high signal-to-noise ratio nanoparticle images with a computationally and memory efficient reconstruction framework. Our direct inversion approach recovers this image from a 3D defocus intensity stack using the vectorial-optics-based forward model developed for sub-diffraction-limited dielectric nanoparticles captured on a layered substrate. We demonstrate proof-of-concept experiments on silica beads with a 50 nm nominal diameter.
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22
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Antibody Printing Technologies. Methods Mol Biol 2020. [PMID: 33237416 DOI: 10.1007/978-1-0716-1064-0_13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
Antibody microarrays are routinely employed in the lab and in the clinic for studying protein expression, protein-protein, and protein-drug interactions. The microarray format reduces the size scale at which biological and biochemical interactions occur, leading to large reductions in reagent consumption and handling times while increasing overall experimental throughput. Specifically, antibody microarrays, as a platform, offer a number of different advantages over traditional techniques in the areas of drug discovery and diagnostics. While a number of different techniques and approaches have been developed for creating micro and nanoscale antibody arrays, issues relating to sensitivity, cost, and reproducibility persist. The aim of this review is to highlight current state-of the-art techniques and approaches for creating antibody arrays by providing latest accounts of the field while discussing potential future directions.
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23
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Grzelak D, Szustakiewicz P, Tollan C, Raj S, Král P, Lewandowski W, Liz-Marzán LM. In Situ Tracking of Colloidally Stable and Ordered Assemblies of Gold Nanorods. J Am Chem Soc 2020; 142:18814-18825. [PMID: 32990433 PMCID: PMC7645924 DOI: 10.1021/jacs.0c06446] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
![]()
Solution-phase
self-assembly of anisotropic nanoparticles into
complex 2D and 3D assemblies is one of the most promising strategies
toward obtaining nanoparticle-based materials and devices with unique
optical properties at the macroscale. However, controlling this process
with single-particle precision is highly demanding, mostly due to
insufficient understanding of the self-assembly process at the nanoscale.
We report the use of in situ environmental scanning transmission electron
microscopy (WetSTEM), combined with UV/vis spectroscopy, small-angle
X-ray diffraction (SAXRD) and multiscale modeling, to draw a detailed
picture of the dynamics of vertically aligned assemblies of gold nanorods.
Detailed understanding of the self-assembly/disassembly mechanisms
is obtained from real-time observations, which provide direct evidence
of the colloidal stability of side-to-side nanorod clusters. Structural
details and the forces governing the disassembly process are revealed
with single particle resolution as well as in bulk samples, by combined
experimental and theoretical modeling. In particular, this study provides
unique information on the evolution of the orientational order of
nanorods within side-to-side 2D assemblies and shows that both electrostatic
(at the nanoscale) and thermal (in bulk) stimuli can be used to drive
the process. These results not only give insight into the interactions
between nanorods and the stability of their assemblies, thereby assisting
the design of ordered, anisotropic nanomaterials but also broaden
the available toolbox for in situ tracking of nanoparticle behavior
at the single-particle level.
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Affiliation(s)
- Dorota Grzelak
- Laboratory of organic nanomaterials and biomolecules, Faculty of Chemistry, University of Warsaw, Pasteura 1 st., Warsaw 02-093, Poland
| | - Piotr Szustakiewicz
- Laboratory of organic nanomaterials and biomolecules, Faculty of Chemistry, University of Warsaw, Pasteura 1 st., Warsaw 02-093, Poland
| | - Christopher Tollan
- Electron-Microscopy Laboratory, CIC nanoGUNE, Basque Research and Technology Alliance (BRTA), Tolosa Hiribidea 76, Donostia, San Sebastián 20018, Spain
| | - Sanoj Raj
- Department of Chemistry, University of Illinois at Chicago, Chicago, Illinois 60607, United States
| | - Petr Král
- Department of Chemistry, University of Illinois at Chicago, Chicago, Illinois 60607, United States.,Department of Physics, Biopharmaceutical Sciences, and Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois 60607, United States
| | - Wiktor Lewandowski
- Laboratory of organic nanomaterials and biomolecules, Faculty of Chemistry, University of Warsaw, Pasteura 1 st., Warsaw 02-093, Poland.,CIC biomaGUNE, Basque Research and Technology Alliance (BRTA) and CIBER-BBN, Paseo de Miramón 182, Donostia, San Sebastián 20014, Spain
| | - Luis M Liz-Marzán
- CIC biomaGUNE, Basque Research and Technology Alliance (BRTA) and CIBER-BBN, Paseo de Miramón 182, Donostia, San Sebastián 20014, Spain.,Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain
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24
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Yang P, Zhang KW, Peng X, Chai YQ, Yuan R, Liang WB. An orbitron-like 3D DNA clip-based nanomachine and its application for sensitive fluorescent bioassay of MicroRNA. Anal Chim Acta 2020; 1126:24-30. [PMID: 32736721 DOI: 10.1016/j.aca.2020.06.004] [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: 02/19/2020] [Revised: 05/07/2020] [Accepted: 06/01/2020] [Indexed: 11/19/2022]
Abstract
Herein, an orbitron-like three-dimensional (3D) DNA clip-based nanomachine was proposed for ultrasensitive fluorescent bioassay of microRNA, which was constructed by mechanically interlocking double-DNA-ring with two single-stranded DNAs, performing an orbitron-like 3D structure with double freely rotated DNA rings as the open state. In the presence of target microRNA, the proposed orbitron-like 3D DNA clip can alter its structure from open to closed state in identification of the target microRNA, generating the closure between the previously modified fluorescent dyes and the quenchers to perform a "signal off" fluorescent signal correlated with the concentration of target microRNA. Compared with the normal DNA nanomachines, such as DNA tweezers constructed by self-assembly of three single-stranded DNAs which regulated the open and closed states on the basis of linear conformational changes, the proposed 3D DNA clip-based nanomachine with high mechanical rigidity realized the conformational changes in 3D space with the assistance of target microRNA, which could effectively increase the adjustable distance range and reduce the background signal. Furthermore, the 3D DNA clip-based nanomachine was applied in the fluorescent detection of microRNA-21 with favorable performances for the sensitive detection of microRNA in cells, providing a new avenue for early clinical diagnoses of disease.
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Affiliation(s)
- Peng Yang
- Chongqing Engineering Laboratory of Nanomaterials & Sensor Technologies, College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Kai-Wei Zhang
- Chongqing Engineering Laboratory of Nanomaterials & Sensor Technologies, College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Xin Peng
- Chongqing Engineering Laboratory of Nanomaterials & Sensor Technologies, College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Ya-Qin Chai
- Chongqing Engineering Laboratory of Nanomaterials & Sensor Technologies, College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Ruo Yuan
- Chongqing Engineering Laboratory of Nanomaterials & Sensor Technologies, College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China.
| | - Wen-Bin Liang
- Chongqing Engineering Laboratory of Nanomaterials & Sensor Technologies, College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China.
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25
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Huang Q, Li N, Zhang H, Che C, Sun F, Xiong Y, Canady TD, Cunningham BT. Critical Review: digital resolution biomolecular sensing for diagnostics and life science research. LAB ON A CHIP 2020; 20:2816-2840. [PMID: 32700698 PMCID: PMC7485136 DOI: 10.1039/d0lc00506a] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
One of the frontiers in the field of biosensors is the ability to quantify specific target molecules with enough precision to count individual units in a test sample, and to observe the characteristics of individual biomolecular interactions. Technologies that enable observation of molecules with "digital precision" have applications for in vitro diagnostics with ultra-sensitive limits of detection, characterization of biomolecular binding kinetics with a greater degree of precision, and gaining deeper insights into biological processes through quantification of molecules in complex specimens that would otherwise be unobservable. In this review, we seek to capture the current state-of-the-art in the field of digital resolution biosensing. We describe the capabilities of commercially available technology platforms, as well as capabilities that have been described in published literature. We highlight approaches that utilize enzymatic amplification, nanoparticle tags, chemical tags, as well as label-free biosensing methods.
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Affiliation(s)
- Qinglan Huang
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 208 North Wright Street, Urbana, IL 61801
- Holonyak Micro and Nanotechnology Laboratory, University of Illinois at Urbana–Champaign, Urbana, IL 61801
| | - Nantao Li
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 208 North Wright Street, Urbana, IL 61801
- Holonyak Micro and Nanotechnology Laboratory, University of Illinois at Urbana–Champaign, Urbana, IL 61801
| | - Hanyuan Zhang
- Holonyak Micro and Nanotechnology Laboratory, University of Illinois at Urbana–Champaign, Urbana, IL 61801
| | - Congnyu Che
- Holonyak Micro and Nanotechnology Laboratory, University of Illinois at Urbana–Champaign, Urbana, IL 61801
- Department of Bioengineering, University of Illinois at Urbana–Champaign, Urbana, IL 61801
| | - Fu Sun
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 208 North Wright Street, Urbana, IL 61801
- Holonyak Micro and Nanotechnology Laboratory, University of Illinois at Urbana–Champaign, Urbana, IL 61801
| | - Yanyu Xiong
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 208 North Wright Street, Urbana, IL 61801
- Holonyak Micro and Nanotechnology Laboratory, University of Illinois at Urbana–Champaign, Urbana, IL 61801
| | - Taylor D. Canady
- Holonyak Micro and Nanotechnology Laboratory, University of Illinois at Urbana–Champaign, Urbana, IL 61801
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana–Champaign, Urbana, IL 61801
| | - Brian T. Cunningham
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 208 North Wright Street, Urbana, IL 61801
- Holonyak Micro and Nanotechnology Laboratory, University of Illinois at Urbana–Champaign, Urbana, IL 61801
- Department of Bioengineering, University of Illinois at Urbana–Champaign, Urbana, IL 61801
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana–Champaign, Urbana, IL 61801
- Illinois Cancer Center, University of Illinois at Urbana-Champaign Urbana, IL 61801
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26
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Farka Z, Mickert MJ, Pastucha M, Mikušová Z, Skládal P, Gorris HH. Fortschritte in der optischen Einzelmoleküldetektion: Auf dem Weg zu höchstempfindlichen Bioaffinitätsassays. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201913924] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Zdeněk Farka
- CEITEC – Central European Institute of TechnologyMasaryk University 625 00 Brno Czech Republic
| | - Matthias J. Mickert
- Institut für Analytische Chemie, Chemo- und BiosensorikUniversität Regensburg Universitätsstraße 31 93040 Regensburg Deutschland
| | - Matěj Pastucha
- CEITEC – Central European Institute of TechnologyMasaryk University 625 00 Brno Czech Republic
- Department of BiochemistryFaculty of ScienceMasaryk University 625 00 Brno Czech Republic
| | - Zuzana Mikušová
- CEITEC – Central European Institute of TechnologyMasaryk University 625 00 Brno Czech Republic
- Department of BiochemistryFaculty of ScienceMasaryk University 625 00 Brno Czech Republic
| | - Petr Skládal
- CEITEC – Central European Institute of TechnologyMasaryk University 625 00 Brno Czech Republic
- Department of BiochemistryFaculty of ScienceMasaryk University 625 00 Brno Czech Republic
| | - Hans H. Gorris
- Institut für Analytische Chemie, Chemo- und BiosensorikUniversität Regensburg Universitätsstraße 31 93040 Regensburg Deutschland
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27
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Farka Z, Mickert MJ, Pastucha M, Mikušová Z, Skládal P, Gorris HH. Advances in Optical Single-Molecule Detection: En Route to Supersensitive Bioaffinity Assays. Angew Chem Int Ed Engl 2020; 59:10746-10773. [PMID: 31869502 PMCID: PMC7318240 DOI: 10.1002/anie.201913924] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 12/20/2019] [Indexed: 12/11/2022]
Abstract
The ability to detect low concentrations of analytes and in particular low-abundance biomarkers is of fundamental importance, e.g., for early-stage disease diagnosis. The prospect of reaching the ultimate limit of detection has driven the development of single-molecule bioaffinity assays. While many review articles have highlighted the potentials of single-molecule technologies for analytical and diagnostic applications, these technologies are not as widespread in real-world applications as one should expect. This Review provides a theoretical background on single-molecule-or better digital-assays to critically assess their potential compared to traditional analog assays. Selected examples from the literature include bioaffinity assays for the detection of biomolecules such as proteins, nucleic acids, and viruses. The structure of the Review highlights the versatility of optical single-molecule labeling techniques, including enzymatic amplification, molecular labels, and innovative nanomaterials.
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Affiliation(s)
- Zdeněk Farka
- CEITEC – Central European Institute of TechnologyMasaryk University625 00BrnoCzech Republic
| | - Matthias J. Mickert
- Institute of Analytical Chemistry, Chemo- and BiosensorsUniversity of RegensburgUniversitätsstraße 3193040RegensburgGermany
| | - Matěj Pastucha
- CEITEC – Central European Institute of TechnologyMasaryk University625 00BrnoCzech Republic
- Department of BiochemistryFaculty of ScienceMasaryk University625 00BrnoCzech Republic
| | - Zuzana Mikušová
- CEITEC – Central European Institute of TechnologyMasaryk University625 00BrnoCzech Republic
- Department of BiochemistryFaculty of ScienceMasaryk University625 00BrnoCzech Republic
| | - Petr Skládal
- CEITEC – Central European Institute of TechnologyMasaryk University625 00BrnoCzech Republic
- Department of BiochemistryFaculty of ScienceMasaryk University625 00BrnoCzech Republic
| | - Hans H. Gorris
- Institute of Analytical Chemistry, Chemo- and BiosensorsUniversity of RegensburgUniversitätsstraße 3193040RegensburgGermany
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28
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Akama K, Noji H. Multiplexed homogeneous digital immunoassay based on single-particle motion analysis. LAB ON A CHIP 2020; 20:2113-2121. [PMID: 32347266 DOI: 10.1039/d0lc00079e] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Homogeneous digital immunoassay is a powerful analytical method for highly sensitive protein biomarker detection with a simple protocol. However, it has not been multiplexed yet. In this study, we developed a multiplexed homogeneous digital immunoassay based on single-particle motion analysis (digital homogeneous non-enzyme-linked immunosorbent assay, digital Ho-Non ELISA). In this assay, multiple target antigen molecules react with the optical subpopulation of magnetic nanobeads labeled with fluorescent dyes and capture antigen-specific antibodies. Then, these beads are magnetically pulled into femtoliter-sized reactors. The surface of these reactors is modified with multiple detection antibodies specific to each antigen by molecular tethers. Each antigen on the particles reacts with the detection antibodies anchored to the surface of the reactors. Magnetic force enhances the efficiency of bead encapsulation in the reactors, and subsequent physical compartmentalization of beads enhances the binding efficiency of the antigen-antibody reaction. The tethered beads show characteristic Brownian motion distinct from free diffusion or non-specific binding of the antigen-free beads. The color of the beads is attributed to target-identification, and the number of tethered beads is attributed to the concentration of the specific target. We measured two biomarkers (PSA and IL6) as model targets by multiplexed digital Ho-Non ELISA. Our method showed higher sensitivity compared to previous digital Ho-Non ELISA and could detect multiple targets simultaneously with the same performance as in single-plex detection. This new strategy has the potential to open a new avenue for next-generation multiplexed immunoassays in in vitro diagnostics.
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Affiliation(s)
- Kenji Akama
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
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29
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Visualizable detection of nanoscale objects using anti-symmetric excitation and non-resonance amplification. Nat Commun 2020; 11:2754. [PMID: 32488014 PMCID: PMC7265281 DOI: 10.1038/s41467-020-16610-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Accepted: 05/13/2020] [Indexed: 11/25/2022] Open
Abstract
Why can we not see nanoscale objects under a light microscope? The textbook answers are that their relative signals are weak and their separation is smaller than Abbe’s resolution limit. Thus, significant effort has gone into developing ultraviolet imaging, oil and solid immersion objectives, nonlinear methods, fluorescence dyes, evanescent wave tailoring, and point-spread function engineering. In this work, we introduce a new optical sensing framework based on the concepts of electromagnetic canyons and non-resonance amplification, to directly view on a widefield microscope λ/31-scale (25-nm radius) objects in the near-field region of nanowire-based sensors across a 726-μm × 582-μm field of view. Our work provides a simple but highly efficient framework that can transform conventional diffraction-limited optical microscopes for nanoscale visualization. Given the ubiquity of microscopy and importance of visualizing viruses, molecules, nanoparticles, semiconductor defects, and other nanoscale objects, we believe our proposed framework will impact many science and engineering fields. The authors introduce the concept of electromagnetic canyons and non-resonance amplification for optical detection of nanoscale objects. They demonstrate that a pair of nanowire sensors enable detection of 25-nm radii objects with a standard widefield microscope.
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30
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Highly sensitive and label-free digital detection of whole cell E. coli with Interferometric Reflectance Imaging. Biosens Bioelectron 2020; 162:112258. [PMID: 32392159 DOI: 10.1016/j.bios.2020.112258] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 04/26/2020] [Accepted: 04/28/2020] [Indexed: 11/24/2022]
Abstract
Bacterial infectious diseases are a major threat to human health. Timely and sensitive pathogenic bacteria detection is crucial in bacterial contaminations identification and preventing the spread of infectious diseases. Due to limitations of conventional bacteria detection techniques there have been concerted research efforts towards developing new biosensors. Biosensors offering label-free, whole bacteria detection are highly desirable over those relying on label-based or pathogenic molecular components detection. The major advantage is eliminating the additional time and cost required for labeling or extracting the desired bacterial components. Here, we demonstrate rapid, sensitive and label-free Escherichia coli (E. coli) detection utilizing interferometric reflectance imaging enhancement allowing visualizing individual pathogens captured on the surface. Enabled by our ability to count individual bacteria on a large sensor surface, we demonstrate an extrapolated limit of detection of 2.2 CFU/ml from experimental data in buffer solution with no sample preparation. To the best of our knowledge, this level of sensitivity for whole E. coli detection is unprecedented in label-free biosensing. The specificity of our biosensor is validated by comparing the response to target bacteria E. coli and non-target bacteria S. aureus, K. pneumonia and P. aeruginosa. The biosensor's performance in tap water proves that its detection capability is unaffected by the sample complexity. Furthermore, our sensor platform provides high optical magnification imaging and thus validation of recorded detection events as the target bacteria based on morphological characterization. Therefore, our sensitive and label-free detection method offers new perspectives for direct bacterial detection in real matrices and clinical samples.
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31
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Wu Y, Bennett D, Tilley RD, Gooding JJ. How Nanoparticles Transform Single Molecule Measurements into Quantitative Sensors. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1904339. [PMID: 31566291 DOI: 10.1002/adma.201904339] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 08/14/2019] [Indexed: 05/24/2023]
Abstract
Single molecule measurements are revolutionizing the understanding of the stochastics of behavior of single molecules. There is a common theme referred to as a near-field approach, in how many single molecule measurements are being performed in assays. The term near field is used because the measurement volume is typically very small such that a single molecule, or a single molecule binding pair, within that volume is of an appreciable concentration. The next development in detection will be performing many single molecule measurements at one time such that single molecule measurements can be used as the basis for quantitative analysis. There have already been some notable developments in this direction. Again, all have a common theme in that nanoparticles are used to create many near-field volumes that can be measured simultaneously. Herein, the coupled developments in nanoparticles and measurement strategies that allow nanoparticles to be the backbone of the next generation of sensing technologies are discussed.
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Affiliation(s)
- Yanfang Wu
- School of Chemistry, The University of New South Wales, Sydney, NSW, 2052, Australia
- Australian Centre for NanoMedicine, The University of New South Wales, Sydney, NSW, 2052, Australia
- The ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Danielle Bennett
- School of Chemistry, The University of New South Wales, Sydney, NSW, 2052, Australia
- Australian Centre for NanoMedicine, The University of New South Wales, Sydney, NSW, 2052, Australia
- The ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Richard D Tilley
- School of Chemistry, The University of New South Wales, Sydney, NSW, 2052, Australia
- Australian Centre for NanoMedicine, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - John Justin Gooding
- School of Chemistry, The University of New South Wales, Sydney, NSW, 2052, Australia
- Australian Centre for NanoMedicine, The University of New South Wales, Sydney, NSW, 2052, Australia
- The ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of New South Wales, Sydney, NSW, 2052, Australia
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32
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Yurdakul C, Avci O, Matlock A, Devaux AJ, Quintero MV, Ozbay E, Davey RA, Connor JH, Karl WC, Tian L, Ünlü MS. High-Throughput, High-Resolution Interferometric Light Microscopy of Biological Nanoparticles. ACS NANO 2020; 14:2002-2013. [PMID: 32003974 DOI: 10.1021/acsnano.9b08512] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Label-free, visible light microscopy is an indispensable tool for studying biological nanoparticles (BNPs). However, conventional imaging techniques have two major challenges: (i) weak contrast due to low-refractive-index difference with the surrounding medium and exceptionally small size and (ii) limited spatial resolution. Advances in interferometric microscopy have overcome the weak contrast limitation and enabled direct detection of BNPs, yet lateral resolution remains as a challenge in studying BNP morphology. Here, we introduce a wide-field interferometric microscopy technique augmented by computational imaging to demonstrate a 2-fold lateral resolution improvement over a large field-of-view (>100 × 100 μm2), enabling simultaneous imaging of more than 104 BNPs at a resolution of ∼150 nm without any labels or sample preparation. We present a rigorous vectorial-optics-based forward model establishing the relationship between the intensity images captured under partially coherent asymmetric illumination and the complex permittivity distribution of nanoparticles. We demonstrate high-throughput morphological visualization of a diverse population of Ebola virus-like particles and a structurally distinct Ebola vaccine candidate. Our approach offers a low-cost and robust label-free imaging platform for high-throughput and high-resolution characterization of a broad size range of BNPs.
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Affiliation(s)
- Celalettin Yurdakul
- Department of Electrical and Computer Engineering , Boston University , Boston , Massachusetts 02215 , United States
| | - Oguzhan Avci
- Department of Electrical and Computer Engineering , Boston University , Boston , Massachusetts 02215 , United States
| | - Alex Matlock
- Department of Electrical and Computer Engineering , Boston University , Boston , Massachusetts 02215 , United States
| | - Alexander J Devaux
- Department of Microbiology and National Infectious Diseases Laboratories , Boston University School of Medicine , Boston , Massachusetts 02118 , United States
| | - Maritza V Quintero
- Department of Biochemistry and Structural Biology , University of Texas Health San Antonio , San Antonio , Texas 78229 , United States
| | - Ekmel Ozbay
- Department of Electrical and Electronics Engineering , Bilkent University , 06800 Ankara , Turkey
| | - Robert A Davey
- Department of Microbiology and National Infectious Diseases Laboratories , Boston University School of Medicine , Boston , Massachusetts 02118 , United States
| | - John H Connor
- Department of Microbiology and National Infectious Diseases Laboratories , Boston University School of Medicine , Boston , Massachusetts 02118 , United States
| | - W Clem Karl
- Department of Electrical and Computer Engineering , Boston University , Boston , Massachusetts 02215 , United States
| | - Lei Tian
- Department of Electrical and Computer Engineering , Boston University , Boston , Massachusetts 02215 , United States
| | - M Selim Ünlü
- Department of Electrical and Computer Engineering , Boston University , Boston , Massachusetts 02215 , United States
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33
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Che C, Li N, Long KD, Aguirre MÁ, Canady TD, Huang Q, Demirci U, Cunningham BT. Activate capture and digital counting (AC + DC) assay for protein biomarker detection integrated with a self-powered microfluidic cartridge. LAB ON A CHIP 2019; 19:3943-3953. [PMID: 31641717 DOI: 10.1039/c9lc00728h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
We demonstrate a rapid, 2-step, and ultrasensitive assay approach for quantification of target protein molecules from a single droplet test sample. The assay is comprised of antibody-conjugated gold nanoparticles (AuNPs) that are "activated" when they are mixed with the test sample and bind their targets. The resulting liquid is passed through a microfluidic channel with a photonic crystal (PC) biosensor that is functionalized with secondary antibodies to the target biomarker, so that only activated AuNPs are captured. Utilizing recently demonstrated hybrid optical coupling between the plasmon resonance of the AuNP and the resonance of the PC, each captured AuNP efficiently quenches the resonant reflection of the PC, thus enabling the captured AuNPs to be digitally counted with high signal-to-noise. To achieve a 2-step assay process that is performed on a single droplet test sample without washing steps or active pump elements, controlled single-pass flow rate is obtained with an absorbing paper pad waste reservoir embedded in a microfluidic cartridge. We use the activate capture and digital counting (AC + DC) approach to demonstrate HIV-1 capsid antigen p24 detection from a 40 μL spiked-in human serum sample at a one thousand-fold dynamic range (1-103 pg mL-1) with only a 35-minute process that is compatible with point-of-care (POC) analysis. The AC + DC approach allows for ultrasensitive and ultrafast biomolecule detection, with potential applications in infectious disease diagnostics and early stage disease monitoring.
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Affiliation(s)
- Congnyu Che
- Department of Bioengineering, University of Illinois at Urbana-Champaign, 208 North Wright Street, Urbana, IL 61801, USA.
| | - Nantao Li
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 208 North Wright Street, Urbana, IL 61801, USA
| | - Kenneth D Long
- Department of Bioengineering, University of Illinois at Urbana-Champaign, 208 North Wright Street, Urbana, IL 61801, USA.
| | - Miguel Ángel Aguirre
- Department of Analytical Chemistry and Food Science and University Institute of Materials, Faculty of Science, University of Alicante, P.O. Box 99, 03080 Alicante, Spain
| | - Taylor D Canady
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, 1206 West Gregory Drive, Urbana, IL 61801, USA
| | - Qinglan Huang
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 208 North Wright Street, Urbana, IL 61801, USA
| | - Utkan Demirci
- Bio-Acoustic MEMS in Medicine (BAMM) Laboratory, Canary Center at Stanford for Cancer Early Detection, Department of Radiology School of Medicine Stanford University, Palo Alto, CA 94304, USA
| | - Brian T Cunningham
- Department of Bioengineering, University of Illinois at Urbana-Champaign, 208 North Wright Street, Urbana, IL 61801, USA. and Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 208 North Wright Street, Urbana, IL 61801, USA and Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, 1206 West Gregory Drive, Urbana, IL 61801, USA
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34
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Akama K, Iwanaga N, Yamawaki K, Okuda M, Jain K, Ueno H, Soga N, Minagawa Y, Noji H. Wash- and Amplification-Free Digital Immunoassay Based on Single-Particle Motion Analysis. ACS NANO 2019; 13:13116-13126. [PMID: 31675215 DOI: 10.1021/acsnano.9b05917] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Digital enzyme-linked immunosorbent assay (ELISA) is a powerful analytical method for highly sensitive protein biomarker detection. The current protocol of digital ELISA requires multiple washing steps and signal amplification using an enzyme, which could be the potential drawback in in vitro diagnosis. In this study, we propose a digital immunoassay method, which we call "Digital HoNon-ELISA" (digital homogeneous non-enzymatic immunosorbent assay) for highly sensitive detection without washing and signal amplification. Target antigen molecules react with antibody-coated magnetic nanoparticles, which are then magnetically pulled into femtoliter-sized reactors. The antigens on the particles are captured by antibodies anchored on the bottom surface of the reactor via molecular tethers. Magnetic force enhances the efficiency of particle encapsulation in the reactors. Subsequent physical compartmentalization of the particles enhances the binding efficiency of antigen-carrying particles to the antibodies. The tethered particles show characteristic Brownian motion within a limited space by the molecular tethering, which is distinct from free diffusion or nonspecific binding of antigen-free particles. The number of tethered particles directly correlates with the concentration of the target antigen. Digital HoNon-ELISA was used with a prostate-specific antigen to achieve a detection of 0.093 pg/mL, which is over 9.0-fold the sensitivity of commercialized highly sensitive ELISA (0.84 pg/mL) and comparable to digital ELISA (0.055 pg/mL). This digital immunoassay strategy has sensitivity similar to digital ELISA with simplicity similar to homogeneous assay. Such similarity allows for potential application in rapid and simple digital diagnostic tests without the need for washing and enzymatic amplification.
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Affiliation(s)
- Kenji Akama
- Department of Applied Chemistry, Graduate School of Engineering , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku, Tokyo 113-8656 , Japan
- Central Research Laboratories , Sysmex Corporation , 4-4-4 Takatsukadai , Nishi-ku, Kobe 651-2271 , Japan
| | - Niina Iwanaga
- Central Research Laboratories , Sysmex Corporation , 4-4-4 Takatsukadai , Nishi-ku, Kobe 651-2271 , Japan
| | - Koya Yamawaki
- Central Research Laboratories , Sysmex Corporation , 4-4-4 Takatsukadai , Nishi-ku, Kobe 651-2271 , Japan
| | - Masaki Okuda
- Central Research Laboratories , Sysmex Corporation , 4-4-4 Takatsukadai , Nishi-ku, Kobe 651-2271 , Japan
| | - Krupali Jain
- Central Research Laboratories , Sysmex Corporation , 4-4-4 Takatsukadai , Nishi-ku, Kobe 651-2271 , Japan
| | - Hiroshi Ueno
- Department of Applied Chemistry, Graduate School of Engineering , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku, Tokyo 113-8656 , Japan
| | - Naoki Soga
- Department of Applied Chemistry, Graduate School of Engineering , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku, Tokyo 113-8656 , Japan
| | - Yoshihiro Minagawa
- Department of Applied Chemistry, Graduate School of Engineering , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku, Tokyo 113-8656 , Japan
| | - Hiroyuki Noji
- Department of Applied Chemistry, Graduate School of Engineering , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku, Tokyo 113-8656 , Japan
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35
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Li Y, Zhong F, Ding P, Chen Z, Luo F, Shao L, Du Y, Chen L, Lei M. Generation of unconventional Fano-comb resonances in multilayered core-shell nanoparticles. NANOTECHNOLOGY 2019; 30:375401. [PMID: 31195382 DOI: 10.1088/1361-6528/ab2996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We theoretically propose a design of core-shell nanoparticles consisting of a dielectric core coated by several alternating plasmonic and dielectric shell layers for the generation of comb-like scattering resonances. We demonstrate that the obtained scattering resonances are independent of the polarization, observation angle and background medium, since they originate from the unconventional Fano interference between Mie modes with the same multipole moment inside each plasmonic shell layer. Furthermore, we also demonstrate that controlling either the core or the shell parameters can precisely tune the spectral positions of the comb-like resonances. At last, we show that the comb-like resonances can be well maintained even for the non-perfect spherical core-shell nanoparticles. All these features make the proposed multilayered core-shell nanoparticles attractive candidates for multichannel and ultrasensitive optical tags.
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Affiliation(s)
- Yan Li
- School of Materials science and engineering, Zhengzhou University of Aeronautics, Zhengzhou 450046, People's Republic of China. Henan Key Laboratory of aeronautical material and application technology, Zhengzhou University of Aeronautics, Zhengzhou 450046, People's Republic of China
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36
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Digital-resolution detection of microRNA with single-base selectivity by photonic resonator absorption microscopy. Proc Natl Acad Sci U S A 2019; 116:19362-19367. [PMID: 31501320 DOI: 10.1073/pnas.1904770116] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Circulating exosomal microRNA (miR) represents a new class of blood-based biomarkers for cancer liquid biopsy. The detection of miR at a very low concentration and with single-base discrimination without the need for sophisticated equipment, large volumes, or elaborate sample processing is a challenge. To address this, we present an approach that is highly specific for a target miR sequence and has the ability to provide "digital" resolution of individual target molecules with high signal-to-noise ratio. Gold nanoparticle tags are prepared with thermodynamically optimized nucleic acid toehold probes that, when binding to a target miR sequence, displace a probe-protecting oligonucleotide and reveal a capture sequence that is used to selectively pull down the target-probe-nanoparticle complex to a photonic crystal (PC) biosensor surface. By matching the surface plasmon-resonant wavelength of the nanoparticle tag to the resonant wavelength of the PC nanostructure, the reflected light intensity from the PC is dramatically and locally quenched by the presence of each individual nanoparticle, enabling a form of biosensor microscopy that we call Photonic Resonator Absorption Microscopy (PRAM). Dynamic PRAM imaging of nanoparticle tag capture enables direct 100-aM limit of detection and single-base mismatch selectivity in a 2-h kinetic discrimination assay. The PRAM assay demonstrates that ultrasensitivity (<1 pM) and high selectivity can be achieved on a direct readout diagnostic.
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37
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Minagawa Y, Ueno H, Tabata KV, Noji H. Mobile imaging platform for digital influenza virus counting. LAB ON A CHIP 2019; 19:2678-2687. [PMID: 31312832 DOI: 10.1039/c9lc00370c] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Droplet-based digital bioassays enable highly sensitive and quantitative analysis of biomolecules, and are thought to be suitable for point-of-care diagnosis. However, digital bioassays generally require fluorescence microscopy for detection, which is too large for point-of-care testing. Here, we developed a simple smartphone-based mobile imaging platform for digital bioassays. The size of the mobile imaging platform was 23 × 10 × 7 cm (length × width × height). With this platform, a digital enzyme assay of bovine alkaline phosphatase was successfully completed. Digital influenza virus counting-based on a fluorogenic assay for neuraminidase activity of the virus-was also demonstrated. Distinct fluorescence spots derived from single virus particles were observed with the mobile imaging platform. The number of detected fluorescence spots showed good linearity against the virus titer, suggesting that high sensitivity and quantification were achieved, although the imaging with the mobile platform detected 60% of influenza virus particles that were identified with conventional fluorescence microscopy. The lower detection efficiency is due to its relatively lower signal-to-noise ratio than that found with conventional microscopes, and unavoidable intrinsic heterogeneity of neuraminidase activity among virus particles. Digital influenza virus counting with the mobile imaging platform still showed 100 times greater sensitivity than that with a commercial rapid influenza test kit. Virus detection of clinical samples was also successfully demonstrated, suggesting the potential to realize a highly sensitive point-of-care system for influenza virus detection with smartphones.
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Affiliation(s)
- Yoshihiro Minagawa
- Department of Applied Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Japan.
| | - Hiroshi Ueno
- Department of Applied Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Japan.
| | - Kazuhito V Tabata
- Department of Applied Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Japan.
| | - Hiroyuki Noji
- Department of Applied Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Japan.
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38
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O'Sullivan S, Ali Z, Jiang X, Abdolvand R, Ünlü MS, Silva HPD, Baca JT, Kim B, Scott S, Sajid MI, Moradian S, Mansoorzare H, Holzinger A. Developments in Transduction, Connectivity and AI/Machine Learning for Point-of-Care Testing. SENSORS (BASEL, SWITZERLAND) 2019; 19:E1917. [PMID: 31018573 PMCID: PMC6515310 DOI: 10.3390/s19081917] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 04/02/2019] [Accepted: 04/02/2019] [Indexed: 12/19/2022]
Abstract
We review some emerging trends in transduction, connectivity and data analytics for Point-of-Care Testing (POCT) of infectious and non-communicable diseases. The patient need for POCT is described along with developments in portable diagnostics, specifically in respect of Lab-on-chip and microfluidic systems. We describe some novel electrochemical and photonic systems and the use of mobile phones in terms of hardware components and device connectivity for POCT. Developments in data analytics that are applicable for POCT are described with an overview of data structures and recent AI/Machine learning trends. The most important methodologies of machine learning, including deep learning methods, are summarised. The potential value of trends within POCT systems for clinical diagnostics within Lower Middle Income Countries (LMICs) and the Least Developed Countries (LDCs) are highlighted.
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Affiliation(s)
- Shane O'Sullivan
- Department of Pathology, Faculdade de Medicina, Universidade de São Paulo, São Paulo 05508-060, Brazil.
| | - Zulfiqur Ali
- Healthcare Innovation Centre, Teesside University, Middlesbrough TS1 3BX, UK.
| | - Xiaoyi Jiang
- Faculty of Mathematics and Computer Science, University Münster, Münster 48149, Germany.
| | - Reza Abdolvand
- Department of Electrical and Computer Engineering, University of Central Florida, Orlando, FL 32816, USA.
| | - M Selim Ünlü
- Department of Electrical and Computer Engineering and Biomedical Engineering, Boston University, Boston, MA 02215, USA.
| | | | - Justin T Baca
- Department of Emergency Medicine, University of New Mexico School of Medicine, Albuquerque, NM 87131, USA.
| | - Brian Kim
- Department of Electrical and Computer Engineering, University of Central Florida, Orlando, FL 32816, USA.
| | - Simon Scott
- Healthcare Innovation Centre, Teesside University, Middlesbrough TS1 3BX, UK.
| | - Mohammed Imran Sajid
- Department of Upper GI Surgery, Wirral University Teaching Hospital, Wirral CH49 5PE, UK.
| | - Sina Moradian
- Department of Electrical and Computer Engineering, University of Central Florida, Orlando, FL 32816, USA.
| | - Hakhamanesh Mansoorzare
- Department of Electrical and Computer Engineering, University of Central Florida, Orlando, FL 32816, USA.
| | - Andreas Holzinger
- Institute for interactive Systems and Data Science, Graz University of Technology, Graz 8074, Austria.
- Institute for Medical Informatics, Statistics and Documentation, Medical University of Graz, Graz 8036, Austria.
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39
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Beating the reaction limits of biosensor sensitivity with dynamic tracking of single binding events. Proc Natl Acad Sci U S A 2019; 116:4129-4134. [PMID: 30782809 DOI: 10.1073/pnas.1815329116] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The clinical need for ultrasensitive molecular analysis has motivated the development of several endpoint-assay technologies capable of single-molecule readout. These endpoint assays are now primarily limited by the affinity and specificity of the molecular-recognition agents for the analyte of interest. In contrast, a kinetic assay with single-molecule readout could distinguish between low-abundance, high-affinity (specific analyte) and high-abundance, low-affinity (nonspecific background) binding by measuring the duration of individual binding events at equilibrium. Here, we describe such a kinetic assay, in which individual binding events are detected and monitored during sample incubation. This method uses plasmonic gold nanorods and interferometric reflectance imaging to detect thousands of individual binding events across a multiplex solid-phase sensor with a large area approaching that of leading bead-based endpoint-assay technologies. A dynamic tracking procedure is used to measure the duration of each event. From this, the total rates of binding and debinding as well as the distribution of binding-event durations are determined. We observe a limit of detection of 19 fM for a proof-of-concept synthetic DNA analyte in a 12-plex assay format.
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40
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Wu Z, Zeng T, Guo WJ, Bai YY, Pang DW, Zhang ZL. Digital Single Virus Immunoassay for Ultrasensitive Multiplex Avian Influenza Virus Detection Based on Fluorescent Magnetic Multifunctional Nanospheres. ACS APPLIED MATERIALS & INTERFACES 2019; 11:5762-5770. [PMID: 30688060 DOI: 10.1021/acsami.8b18898] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
The fluorescence method has made great progress in the construction of sensitive sensors but the background fluorescence of the matrix and photobleaching limit its broad application in clinical diagnosis. Here, we propose a digital single virus immunoassay for multiplex virus detection by using fluorescent magnetic multifunctional nanospheres as both capture carriers and signal labels. The superparamagnetism and strong magnetic response ability of nanospheres can realize efficient capture and separation of targets without sample pretreatment. Due to their distinguishable fluorescence imaging and photostability, the nanospheres enable single-particle counting for ultrasensitive multiplexed detection. Furthermore, the integration of digital analysis provided a reliable quantitative strategy for the detection of rare targets. Based on multifunctional nanospheres and digital analysis, a digital single virus immunoassay was proposed for simultaneous detection of H9N2, H1N1, and H7N9 avian influenza virus without complex signal amplification, whose detection limits were 0.02 pg/mL. Owing to its good specificity and anti-interference ability, the method showed great potential in single biomolecules, multiplexed detection, and early diagnosis of diseases.
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Affiliation(s)
- Zhen Wu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, State Key Laboratory of Virology , Wuhan University , Wuhan 430072 , P. R. China
| | - Tao Zeng
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, State Key Laboratory of Virology , Wuhan University , Wuhan 430072 , P. R. China
| | - Wen-Jing Guo
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, State Key Laboratory of Virology , Wuhan University , Wuhan 430072 , P. R. China
| | - Yi-Yan Bai
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, State Key Laboratory of Virology , Wuhan University , Wuhan 430072 , P. R. China
| | - Dai-Wen Pang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, State Key Laboratory of Virology , Wuhan University , Wuhan 430072 , P. R. China
| | - Zhi-Ling Zhang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, State Key Laboratory of Virology , Wuhan University , Wuhan 430072 , P. R. China
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41
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Cheng CY, Liao YH, Hsieh CL. High-speed imaging and tracking of very small single nanoparticles by contrast enhanced microscopy. NANOSCALE 2019; 11:568-577. [PMID: 30548049 DOI: 10.1039/c8nr06789a] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Nanoparticles have been used extensively in biology-related research and many applications require direct visualization of individual nanoparticles by optical microscopy. For long-term and high-speed measurements, scattering-based microscopy is a unique technique because of the stable and indefinite scattering signals. In scattering-based single-particle measurements, large nanoparticles are usually needed in order to generate sufficient signals for detection. However, larger nanoparticles introduce greater mass loading, experience stronger steric hindrance, and are more prone to crosslinking. In this work, we demonstrate coherent brightfield (COBRI) microscopy with enhanced contrast and show its capability of direct visualization of very small nanoparticles in scattering at a high speed. COBRI microscopy allows us to visualize and track single metallic and dielectric nanoparticles, as small as 10 nm, at 1000 frames per second. A quantitative relationship between the linear scattering cross section of the nanoparticle and its COBRI contrast is reported. Using COBRI microscopy, we further demonstrate the tracking of 10 nm gold nanoparticles labeled to lipid molecules in supported bilayer membranes, showing that the small nanoparticles may facilitate single-molecule measurements with reduced perturbation. Furthermore, the identical imaging sensitivities of COBRI and interferometric scattering (iSCAT) microscopy, the reflection counterpart of COBRI, is demonstrated at an equal illumination intensity. Finally, future improvements in the speed and sensitivity of scattering-based interference microscopy are discussed.
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Affiliation(s)
- Ching-Ya Cheng
- Institute of Atomic and Molecular Sciences (IAMS), Academia Sinica, 10617 Taipei, Taiwan.
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