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Dasgupta S, Ray K. Plasmon-enhanced fluorescence for biophotonics and bio-analytical applications. Front Chem 2024; 12:1407561. [PMID: 38988729 PMCID: PMC11233826 DOI: 10.3389/fchem.2024.1407561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Accepted: 05/17/2024] [Indexed: 07/12/2024] Open
Abstract
Fluorescence spectroscopy serves as an ultrasensitive sophisticated tool where background noises which serve as a major impediment to the detection of the desired signals can be safely avoided for detections down to the single-molecule levels. One such way of bypassing background noise is plasmon-enhanced fluorescence (PEF), where the interactions of fluorophores at the surface of metals or plasmonic nanoparticles are probed. The underlying condition is a significant spectral overlap between the localized surface plasmon resonance (LSPR) of the nanoparticle and the absorption or emission spectra of the fluorophore. The rationale being the coupling of the excited state of the fluorophore with the localized surface plasmon leads to an augmented emission, owing to local field enhancement. It is manifested in enhanced quantum yields concurrent with a decrease in fluorescence lifetimes, owing to an increase in radiative rate constants. This improvement in detection provided by PEF allows a significant scope of expansion in the domain of weakly emitting fluorophores which otherwise would have remained unperceivable. The concept of coupling of weak emitters with plasmons can bypass the problems of photobleaching, opening up avenues of imaging with significantly higher sensitivity and improved resolution. Furthermore, amplification of the emission signal by the coupling of free electrons of the metal nanoparticles with the electrons of the fluorophore provides ample opportunities for achieving lower detection limits that are involved in biological imaging and molecular sensing. One avenue that has attracted significant attraction in the last few years is the fast, label-free detection of bio-analytes under physiological conditions using plasmonic nanoparticles for point-of-care analysis. This review focusses on the applications of plasmonic nanomaterials in the field of biosensing, imaging with a brief introduction on the different aspects of LSPR and fabrication techniques.
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Affiliation(s)
- Souradip Dasgupta
- Division of Vaccine Research, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Krishanu Ray
- Division of Vaccine Research, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, United States
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD, United States
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2
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Saadati A, Baghban HN, Hasanzadeh M, Shadjou N. An innovative transportable immune device for the recognition of α-synuclein using KCC-1- nPr-CS 2 modified silver nano-ink: integration of pen-on-paper technology with biosensing toward early-stage diagnosis of Parkinson's disease. RSC Adv 2024; 14:8810-8818. [PMID: 38495975 PMCID: PMC10941091 DOI: 10.1039/d3ra07058a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 02/18/2024] [Indexed: 03/19/2024] Open
Abstract
Parkinson's disease (PD), the second most frequent neurodegenerative illness, is a neurological ailment that produces unintentional or uncontrolled body movements, which should be diagnosed in its early stages to hinder the progression. Monitoring the concentration of α-synuclein (α-Syn) in body fluids can be one of the most efficient ways for PD early detection. In this work, a paper-based electrochemical immunosensor was designed for α-Syn bio-assay in human plasma samples based on encapsulation of the biotinylated antibody on novel dendritic fibrous nanosilica ((KCC-1-nPr-CS2)-Ab). For this purpose, a three-electrode system was prepared using stabilization of silver nano-ink on photographic paper. Then, the (KCC-1-NH-CS2)-Ab was immobilized on its surface and used to detect the target antigen (α-Syn). After characterization of the prepared substrate by FE-SEM and EDS, the redox behavior of the biosensor was evaluated using chronoamperometry techniques. Under optimal experimental conditions and using a label-free strategy, the engineered immunosensor showed a linear relationship between peak current and antigen concentration in the linear range from 0.002 to 128 ng mL-1 with the lower limit of quantification of 0.002 ng mL-1. Moreover, this work involves unprecedented use of conductive nano-inks for the manufacture of α-Syn immunosensor, which is aided by the use of a mesoporous silicate dendrimer in encapsulating the α-Syn antibody, thus offering a robust and simple point-of-care device for early PD diagnosis. The ability of the proposed platform to detect small amounts of α-Syn offers a promising approach to developing low-cost, sensitive, and transportable biosensors for Parkinson's disease screening in its early stages.
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Affiliation(s)
- Arezoo Saadati
- Nutrition Research Center, Tabriz University of Medical Sciences Tabriz Iran
| | - Hossein Navay Baghban
- Food and Drug Safety Research Center, Tabriz University of Medical Sciences Tabriz Iran
| | - Mohammad Hasanzadeh
- Pharmaceutical Analysis Research Center, Tabriz University of Medical Sciences Tabriz 51664 Iran
| | - Nasrin Shadjou
- Department of Nanotechnology, Faculty Chemistry, Urmia University Urmia Iran
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3
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Lou C, Yang H, Hou Y, Huang H, Qiu J, Wang C, Sang Y, Liu H, Han L. Microfluidic Platforms for Real-Time In Situ Monitoring of Biomarkers for Cellular Processes. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2307051. [PMID: 37844125 DOI: 10.1002/adma.202307051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 09/05/2023] [Indexed: 10/18/2023]
Abstract
Cellular processes are mechanisms carried out at the cellular level that are aimed at guaranteeing the stability of the organism they comprise. The investigation of cellular processes is key to understanding cell fate, understanding pathogenic mechanisms, and developing new therapeutic technologies. Microfluidic platforms are thought to be the most powerful tools among all methodologies for investigating cellular processes because they can integrate almost all types of the existing intracellular and extracellular biomarker-sensing methods and observation approaches for cell behavior, combined with precisely controlled cell culture, manipulation, stimulation, and analysis. Most importantly, microfluidic platforms can realize real-time in situ detection of secreted proteins, exosomes, and other biomarkers produced during cell physiological processes, thereby providing the possibility to draw the whole picture for a cellular process. Owing to their advantages of high throughput, low sample consumption, and precise cell control, microfluidic platforms with real-time in situ monitoring characteristics are widely being used in cell analysis, disease diagnosis, pharmaceutical research, and biological production. This review focuses on the basic concepts, recent progress, and application prospects of microfluidic platforms for real-time in situ monitoring of biomarkers in cellular processes.
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Affiliation(s)
- Chengming Lou
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Hongru Yang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Ying Hou
- Institute for Advanced Interdisciplinary Research (IAIR), University of Jinan, Jinan, 250022, P. R. China
| | - Haina Huang
- Institute for Advanced Interdisciplinary Research (IAIR), University of Jinan, Jinan, 250022, P. R. China
| | - Jichuan Qiu
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Chunhua Wang
- Institute for Advanced Interdisciplinary Research (IAIR), University of Jinan, Jinan, 250022, P. R. China
| | - Yuanhua Sang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Hong Liu
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
- Institute for Advanced Interdisciplinary Research (IAIR), University of Jinan, Jinan, 250022, P. R. China
| | - Lin Han
- Institute of Marine Science and Technology, Shandong University, Qingdao, Shandong, 266000, P. R. China
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Semeniak D, Cruz DF, Chilkoti A, Mikkelsen MH. Plasmonic Fluorescence Enhancement in Diagnostics for Clinical Tests at Point-of-Care: A Review of Recent Technologies. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2107986. [PMID: 35332957 PMCID: PMC9986847 DOI: 10.1002/adma.202107986] [Citation(s) in RCA: 35] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 01/26/2022] [Indexed: 05/31/2023]
Abstract
Fluorescence-based biosensors have widely been used in the life-sciences and biomedical applications due to their low limit of detection and a diverse selection of fluorophores that enable simultaneous measurements of multiple biomarkers. Recent research effort has been made to implement fluorescent biosensors into the exploding field of point-of-care testing (POCT), which uses cost-effective strategies for rapid and affordable diagnostic testing. However, fluorescence-based assays often suffer from their feeble signal at low analyte concentrations, which often requires sophisticated, costly, and bulky instrumentation to maintain high detection sensitivity. Metal- and metal oxide-based nanostructures offer a simple solution to increase the output signal from fluorescent biosensors due to the generation of high field enhancements close to a metal or metal oxide surface, which has been shown to improve the excitation rate, quantum yield, photostability, and radiation pattern of fluorophores. This article provides an overview of existing biosensors that employ various strategies for fluorescence enhancement via nanostructures and have demonstrated the potential for use as POCT. Biosensors using nanostructures such as planar substrates, freestanding nanoparticles, and metal-dielectric-metal nanocavities are discussed with an emphasis placed on technologies that have shown promise towards POCT applications without the need for centralized laboratories.
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Affiliation(s)
- Daria Semeniak
- Department of Biomedical Engineering, Duke University, Durham, NC 27708, USA
| | - Daniela F. Cruz
- Department of Biomedical Engineering, Duke University, Durham, NC 27708, USA
| | - Ashutosh Chilkoti
- Department of Biomedical Engineering, Duke University, Durham, NC 27708, USA
| | - Maiken H. Mikkelsen
- Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708, USA
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5
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Jiao C, Duan W, Wu X, Shang Y, Zhang F, Zhang M, Chen X, Zeng J, Yang C. Multifunctional Nanoprobe-Amplified Enzyme-Linked Immunosorbent Assay on Capillary: A Universal Platform for Simple, Rapid, and Ultrasensitive Dual-Mode Pathogen Detection. Anal Chem 2023. [PMID: 37402321 DOI: 10.1021/acs.analchem.3c01375] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/06/2023]
Abstract
Although the traditional enzyme-linked immunosorbent assay (ELISA) has been widely applied in pathogen detection and clinical diagnostics, it always suffers from complex procedures, a long incubation time, unsatisfying sensitivity, and a single signal readout. Here, we developed a simple, rapid, and ultrasensitive platform for dual-mode pathogen detection based on a multifunctional nanoprobe integrated with a capillary ELISA (CLISA) platform. The novel capture antibodies-modified capillaries can act as a swab to combine in situ trace sampling and detection procedures, eliminating the dissociation between sampling and detection in traditional ELISA assays. With excellent photothermal and peroxidase-like activity, the Fe3O4@MoS2 nanoprobe with a unique p-n heterojunction was chosen as an enzyme substitute and amplified signal tag to label the detection antibody for further sandwich immune sensing. As the analyte concentration increased, the Fe3O4@MoS2 probe could generate dual-mode signals, including remarkable color changes from the chromogenic substrate oxidation as well as photothermal enhancement. Moreover, to avoid false negative results, the excellent magnetic capability of the Fe3O4@MoS2 probe can be used to pre-enrich the trace analytes, amplifying the detection signal and enhancing the immunoassay's sensitivity. Under optimal conditions, specific and rapid detection of SARS-CoV-2 has been realized successfully based on this integrated nanoprobe-enhanced CLISA platform. The detection limits were 5.41 pg·mL-1 for the photothermal assay and 150 pg·mL-1 for the visual colorimetric assay. More importantly, the simple, affordable, and portable platform can also be expanded to rapidly detect other targets such as Staphylococcus aureus and Salmonella typhimurium in practical samples, making it a universal and attractive tool for multiple pathogen analysis and clinical testing in the post COVID-19 era.
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Affiliation(s)
- Chunpeng Jiao
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Wei Duan
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Xian Wu
- Department of Clinical Laboratory, Peking University First Hospital, Beijing 100034, China
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Yanxue Shang
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Fangdou Zhang
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Maosheng Zhang
- College of Chemistry and Environment, Fujian Provincial Key Laboratory of Modern Analytical Science and Separation Technology, Minnan Normal University, Zhangzhou 363000, China
| | - Xi Chen
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Jingbin Zeng
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Chaoyong Yang
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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Kamei R, Hosomi T, Kanai M, Kanao E, Liu J, Takahashi T, Li W, Tanaka W, Nagashima K, Nakano K, Otsuka K, Kubo T, Yanagida T. Rational Strategy for Space-Confined Atomic Layer Deposition. ACS APPLIED MATERIALS & INTERFACES 2023; 15:23931-23937. [PMID: 37155349 DOI: 10.1021/acsami.3c01443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Atomic layer deposition (ALD) offers excellent controllability of spatial uniformity, film thickness at the Angstrom level, and film composition even for high-aspect-ratio nanostructured surfaces, which are rarely attainable by other conventional deposition methodologies. Although ALD has been successfully applied to various substrates under open-top circumstances, the applicability of ALD to confined spaces has been limited because of the inherent difficulty of supplying precursors into confined spaces. Here, we propose a rational methodology to apply ALD growths to confined spaces (meter-long microtubes with an aspect ratio of up to 10 000). The ALD system, which can generate differential pressures to confined spaces, was newly developed. By using this ALD system, it is possible to deposit TiOx layers onto the inner surface of capillary tubes with a length of 1000 mm and an inner diameter of 100 μm with spatial deposition uniformity. Furthermore, we show the superior thermal and chemical robustness of TiOx-coated capillary microtubes for molecular separations when compared to conventional molecule-coated capillary microtubes. Thus, the present rational strategy of space-confined ALD offers a useful approach to design the chemical and physical properties of the inner surfaces of various confined spaces.
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Affiliation(s)
- Ryoma Kamei
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8654, Japan
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-Koen, Kasuga, Fukuoka, 816-8580, Japan
| | - Takuro Hosomi
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8654, Japan
- JST-PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Masaki Kanai
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-Koen, Kasuga, Fukuoka, 816-8580, Japan
| | - Eisuke Kanao
- Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto 606-8501, Japan
- National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka 567-0085, Japan
| | - Jiangyang Liu
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8654, Japan
| | - Tsunaki Takahashi
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8654, Japan
- JST-PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Wenjun Li
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8654, Japan
| | - Wataru Tanaka
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8654, Japan
| | - Kazuki Nagashima
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8654, Japan
- JST-PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Katsuya Nakano
- Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Koji Otsuka
- Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Takuya Kubo
- Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Takeshi Yanagida
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8654, Japan
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-Koen, Kasuga, Fukuoka, 816-8580, Japan
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7
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Li X, Fang C, Feng Z, Li J, Li Y, Hu W. Label-free OIRD microarray chips with a nanostructured sensing interface: enhanced sensitivity and mechanism. LAB ON A CHIP 2022; 22:3910-3919. [PMID: 36097822 DOI: 10.1039/d2lc00671e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Oblique-incidence reflectivity difference (OIRD) is a novel optical technique for protein microarray detection with the characteristics of being real-time, label-free, high-throughput and compatible with arbitrary chip substrates. It is necessary yet challenging to improve the sensitivity of the OIRD microarray and gain a clear understanding of the enhancement mechanism for practical applications. In this study, we report a microarray chip specifically designed for OIRD to improve its sensitivity by using an electrochemically etched nanostructured fluorine-doped tin oxide (FTO) slide as the substrate. Compared with chips printed on a conventional glass slide and pristine FTO, the OIRD sensitivity and signal-to-noise ratio of this microarray are significantly improved, reaching a limit of detection (LOD) as low as 50 ng mL-1 for the streptavidin target in 10% human serum, which is one order of magnitude lower than that of the glass-based chip. On-chip ELISA and theoretical calculation reveal that the enhanced sensitivity is not only because of its higher capture efficiency towards the target, but also benefits from the optical enhancement enabled by its unique nanostructured sensing interface. This work provides a new universal strategy for designing high performance OIRD-based chips via rational interfacial engineering, thus paving the way to a label-free OIRD immunoassay and real-time analysis of biomolecular interactions.
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Affiliation(s)
- Xiaoyi Li
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Materials and Energy, Southwest University, Chongqing 400715, China.
| | - Changxiang Fang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Materials and Energy, Southwest University, Chongqing 400715, China.
| | - Zhihao Feng
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Materials and Energy, Southwest University, Chongqing 400715, China.
| | - Junying Li
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Materials and Energy, Southwest University, Chongqing 400715, China.
| | - Yan Li
- Analytical & Testing Center, Southwest University, Chongqing 400715, China
| | - Weihua Hu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Materials and Energy, Southwest University, Chongqing 400715, China.
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8
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Ng SS, Lee HL, Pandian BR, Doong RA. Recent developments on nanomaterial-based optical biosensor as potential Point-of-Care Testing (PoCT) probe in carcinoembryonic antigen detection: A review. Chem Asian J 2022; 17:e202200287. [PMID: 35471591 DOI: 10.1002/asia.202200287] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 04/25/2022] [Indexed: 11/09/2022]
Abstract
For the past decades, several cancer biomarkers have been exploited for rapid and accurate prognosis or diagnosis purposes. In this review, the optical biosensor is targeted for carcinoembryonic antigen (CEA) detection. The CEA level is a prominent parameter currently used in clinical cases for the prognosis of cancer-related diseases. Many nanomaterial-based biosensors are invented as alternatives for the commonly used enzyme-linked immunosorbent assays (ELISA) immunoassay method in CEA detection as the traditional approach but they possess certain drawbacks such as tedious procedure, high technical demand, and costly. Nevertheless, the effort appears to be wasted as none of them are being actualised. Generally, the sensor function was carried out by converting bio-signals generated upon the interface of the receptor into light signals. These sensors were popular due to specific advantages such as sensitivity, being free from chemical and electromagnetic interferences, wide dynamic range, and being easy to be monitored. The features of PoC diagnostics are discussed and associated with the various applications of colorimetric-based and chemiluminescent-based biosensors. The roles of nanomaterials in each application were also summarised by comparing the modification, incubation period, lowest detection limit (LOD) and linear range of detection amount. The challenges and future perspectives were highlighted at the end of the review.
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Affiliation(s)
- Siew Suan Ng
- National Tsing Hua University, Department of Analytical and Environmental Science, TAIWAN
| | - Hooi Ling Lee
- Universiti Sains Malaysia, School of Chemical Sciences, School of Chemical Sciences,, Universiti Sains Malaysia,, 11800, USM, MALAYSIA
| | | | - Ruey-An Doong
- National Tsing Hua University, Department of Analytical and Environmental Science, TAIWAN
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9
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Hwang BY, Kim E, Kim SH, Hwang H. Evaluation of Analytical Performances of Magnetic Force-Assisted Electrochemical Sandwich Immunoassay for the Quantification of Carcinoembryonic Antigen. Front Bioeng Biotechnol 2022; 9:798079. [PMID: 35071206 PMCID: PMC8767762 DOI: 10.3389/fbioe.2021.798079] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 12/07/2021] [Indexed: 11/28/2022] Open
Abstract
Carcinoembryonic antigen (CEA) is a biomarker indicated in different cancers, targeted for quantitative analysis via immunoassay. Here we introduce a new technique called magnetic force-assisted electrochemical sandwich immunoassay (MESIA) for determination of CEA level in a drop of human serum using a fully automated point-of-care testing (POCT) device. The analytical performances of the assay are assessed based on precision, accuracy, limit of blank (LoB), limit of detection (LoD) and limit of quantitation (LoQ), linearity, Hook effect, interference, cross-reactivity, and method comparison following the guidelines of the Clinical Laboratory Standards Institute (CLSI). The LoD is 0.50 ng/ml. A linear relationship is shown in the range of 0.5–200 ng/ml. A high dose effect is not seen up to approximately 500,000 ng/ml. The recovery range is from 94.7 to 108.9%. The %CV of run-to-run and within-lab variations are less than 2.04 and 4.41% across the CEA concentrations, respectively, whereas reproducibility is 4.45–6.24%. Method comparison shows that the assay correlates well with the reference device (R2 = 0.9884). The assay demonstrates acceptable precision, accuracy, LoB, LoD and LoQ, hook effect, linearity, interference, cross-reactivity, and high correlation with its reference device. Thus, the system is suitable for the quantification of CEA in clinical practices with a POCT manner.
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Affiliation(s)
- Boo Young Hwang
- Department of Anesthesia and Pain Medicine, School of Medicine, Pusan National University, Yangsan, South Korea.,Department of Anesthesia and Pain Medicine, Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea
| | - Eunsoo Kim
- Department of Anesthesia and Pain Medicine, School of Medicine, Pusan National University, Yangsan, South Korea.,Department of Anesthesia and Pain Medicine, Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea
| | - Seung-Ha Kim
- Department of Anesthesia and Pain Medicine, School of Medicine, Pusan National University, Yangsan, South Korea
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Wang Y, Zhao J, Zhu Y, Dong S, Liu Y, Sun Y, Qian L, Yang W, Cao Z. Monolithic integration of nanorod arrays on microfluidic chips for fast and sensitive one-step immunoassays. MICROSYSTEMS & NANOENGINEERING 2021; 7:65. [PMID: 34567777 PMCID: PMC8433357 DOI: 10.1038/s41378-021-00291-w] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 06/01/2021] [Accepted: 06/20/2021] [Indexed: 05/27/2023]
Abstract
Here, we present integrated nanorod arrays on microfluidic chips for fast and sensitive flow-through immunoassays of physiologically relevant macromolecules. Dense arrays of Au nanorods are easily fabricated through one-step oblique angle deposition, which eliminates the requirement of advanced lithography methods. We report the utility of this plasmonic structure to improve the detection limit of the cardiac troponin I (cTnI) assay by over 6 × 105-fold, reaching down to 33.9 fg mL-1 (~1.4 fM), compared with an identical assay on glass substrates. Through monolithic integration with microfluidic elements, the device enables a flow-through assay for quantitative detection of cTnI in the serum with a detection sensitivity of 6.9 pg mL-1 (~0.3 pM) in <6 min, which was 4000 times lower than conventional glass devices. This ultrasensitive detection arises from the large surface area for antibody conjugation and metal-enhanced fluorescent signals through plasmonic nanostructures. Moreover, due to the parallel arrangement of flow paths, simultaneous detection of multiple cancer biomarkers, including prostate-specific antigen and carcinoembryonic antigen, has been fulfilled with increased signal-to-background ratios. Given the high performance of this assay, together with its simple fabrication process that is compatible with standard mass manufacturing techniques, we expect that the prepared integrated nanorod device can bring on-site point-of-care diagnosis closer to reality.
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Affiliation(s)
- Ye Wang
- College of Information Science and Electronic Engineering, Zhejiang University, 310027 Hangzhou, People’s Republic of China
| | - Jiongdong Zhao
- College of Information Science and Electronic Engineering, Zhejiang University, 310027 Hangzhou, People’s Republic of China
| | - Yu Zhu
- Suzhou Institute of Nano-tech and Nano-Bionics, Chinese Academy of Sciences, 215123 Suzhou, People’s Republic of China
| | - Shurong Dong
- College of Information Science and Electronic Engineering, Zhejiang University, 310027 Hangzhou, People’s Republic of China
- Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, 310018 Hangzhou, People’s Republic of China
| | - Yang Liu
- College of Information Science and Electronic Engineering, Zhejiang University, 310027 Hangzhou, People’s Republic of China
| | - Yijun Sun
- College of Information Science and Electronic Engineering, Zhejiang University, 310027 Hangzhou, People’s Republic of China
| | - Liling Qian
- Children’s Hospital of Fudan University, Shanghai, People’s Republic of China
| | - Wenting Yang
- Genenexus Technology Corporation, Shanghai, People’s Republic of China
| | - Zhen Cao
- College of Information Science and Electronic Engineering, Zhejiang University, 310027 Hangzhou, People’s Republic of China
- Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, 310018 Hangzhou, People’s Republic of China
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11
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Shi Y, Ye P, Yang K, Meng J, Guo J, Pan Z, Bayin Q, Zhao W. Application of Microfluidics in Immunoassay: Recent Advancements. JOURNAL OF HEALTHCARE ENGINEERING 2021; 2021:2959843. [PMID: 34326976 PMCID: PMC8302407 DOI: 10.1155/2021/2959843] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 06/30/2021] [Indexed: 12/14/2022]
Abstract
In recent years, point-of-care testing has played an important role in immunoassay, biochemical analysis, and molecular diagnosis, especially in low-resource settings. Among various point-of-care-testing platforms, microfluidic chips have many outstanding advantages. Microfluidic chip applies the technology of miniaturizing conventional laboratory which enables the whole biochemical process including reagent loading, reaction, separation, and detection on the microchip. As a result, microfluidic platform has become a hotspot of research in the fields of food safety, health care, and environmental monitoring in the past few decades. Here, the state-of-the-art application of microfluidics in immunoassay in the past decade will be reviewed. According to different driving forces of fluid, microfluidic platform is divided into two parts: passive manipulation and active manipulation. In passive manipulation, we focus on the capillary-driven microfluidics, while in active manipulation, we introduce pressure microfluidics, centrifugal microfluidics, electric microfluidics, optofluidics, magnetic microfluidics, and digital microfluidics. Additionally, within the introduction of each platform, innovation of the methods used and their corresponding performance improvement will be discussed. Ultimately, the shortcomings of different platforms and approaches for improvement will be proposed.
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Affiliation(s)
- Yuxing Shi
- School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Peng Ye
- School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Kuojun Yang
- School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Jie Meng
- School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Jiuchuan Guo
- School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Zhixiang Pan
- School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Qiaoge Bayin
- School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Wenhao Zhao
- School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
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Kamei R, Hosomi T, Kanao E, Kanai M, Nagashima K, Takahashi T, Zhang G, Yasui T, Terao J, Otsuka K, Baba Y, Kubo T, Yanagida T. Rational Strategy for Space-Confined Seeded Growth of ZnO Nanowires in Meter-Long Microtubes. ACS APPLIED MATERIALS & INTERFACES 2021; 13:16812-16819. [PMID: 33784465 DOI: 10.1021/acsami.0c22709] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Seeded crystal growths of nanostructures within confined spaces offer an interesting approach to design chemical reaction spaces with tailored inner surface properties. However, such crystal growth within confined spaces tends to be inherently difficult as the length increases as a result of confinement effects. Here, we demonstrate a space-confined seeded growth of ZnO nanowires within meter-long microtubes of 100 μm inner diameter with the aspect ratio of up to 10 000, which had been unattainable to previous methods of seeded crystal growths. ZnO nanowires could be grown via seeded hydrothermal crystal growth for relatively short microtubes below the length of 40 mm, while any ZnO nanostructures were not observable at all for longer microtubes above 60 mm with the aspect ratio of 600. Microstructural and mass spectrometric analysis revealed that a conventional seed layer formation using zinc acetate is unfeasible within the confined space of long microtubes as a result of the formation of detrimental residual Zn complex compounds. To overcome this space-confined issue, a flow-assisted seed layer formation is proposed. This flow-assisted method enables growth of spatially uniform ZnO nanowires via removing residual compounds even for 1 m long microtubes with the aspect ratio of up to 10 000. Finally, the applicably of ZnO-nanowire-decorated long microtubes for liquid-phase separations was demonstrated.
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Affiliation(s)
- Ryoma Kamei
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8654, Japan
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-Koen, Kasuga, Fukuoka 816-8580, Japan
| | - Takuro Hosomi
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8654, Japan
- Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Eisuke Kanao
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
- National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka 567-0085, Japan
| | - Masaki Kanai
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8654, Japan
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-Koen, Kasuga, Fukuoka 816-8580, Japan
| | - Kazuki Nagashima
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8654, Japan
- Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Tsunaki Takahashi
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8654, Japan
- Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Guozhu Zhang
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8654, Japan
| | - Takao Yasui
- Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Jun Terao
- Department of Basic Science, Graduate School of Art and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan
| | - Koji Otsuka
- Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Yoshinobu Baba
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Takuya Kubo
- Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Takeshi Yanagida
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8654, Japan
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-Koen, Kasuga, Fukuoka 816-8580, Japan
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Facile synthesis of 3D hierarchical micro-/nanostructures in capillaries for efficient capture of circulating tumor cells. J Colloid Interface Sci 2020; 575:108-118. [PMID: 32361043 DOI: 10.1016/j.jcis.2020.04.087] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 04/06/2020] [Accepted: 04/20/2020] [Indexed: 01/28/2023]
Abstract
The efficient capture of rare circulating tumor cells (CTCs) with high viability is of great importance in cancer diagnosis. The integration of three-dimensional (3D) nanobiointerfaces with capillary flow channel platforms can efficiently improve CTC capture performance by providing abundant binding sites and increasing the likelihood of contact as samples flow through the microchannels. However, due to the complex preparation processes, facile synthesis of nanostructures for use as substrates in flow channels for biomedical applications is still challenging. To reduce the encapsulation steps in the fabricating of nanostructured flow channel devices, we chose the enclosed glass capillaries as flow channels and accomplished all the experiments in the microchannels, including 3D nanostructure synthesis, surface modification and capture/release of CTCs. In this work, we constructed a novel 3D Zn(OH)F/ZnO nanoforest array in capillaries for CTC isolation via a facile microfluidic wet chemistry method. Because of the abundant binding sites of the 3D Zn(OH)F/ZnO nanoforest array, the capture efficiency was remarkably enhanced compared with that of vertical nanowires (90.3% vs 69.1%). In addition, a high release efficiency and cell viability of released cells were achieved by grafting poly(N-isopropylacrylamide) (PNIPPAm). These results may provide evidence for a novel method to fabricate hierarchical 3D substrates with a combination of biomolecule recognition and topographical interaction for biomedical applications.
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Dalili A, Samiei E, Hoorfar M. A review of sorting, separation and isolation of cells and microbeads for biomedical applications: microfluidic approaches. Analyst 2019; 144:87-113. [DOI: 10.1039/c8an01061g] [Citation(s) in RCA: 145] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We have reviewed the microfluidic approaches for cell/particle isolation and sorting, and extensively explained the mechanism behind each method.
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Affiliation(s)
- Arash Dalili
- The University of British
- School of Engineering
- Kelowna
- Canada V1 V 1 V7
| | - Ehsan Samiei
- University of Victoria
- Department of Mechanical Engineering
- Victoria
- Canada
| | - Mina Hoorfar
- The University of British
- School of Engineering
- Kelowna
- Canada V1 V 1 V7
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15
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Liu P, Fang X, Cao H, Gu M, Kong J, Deng A. Magnetic-bioluminescent-nanoliposomes for ultrasensitive and portable detection of protein biomarkers in blood. Anal Chim Acta 2018; 1039:98-107. [DOI: 10.1016/j.aca.2018.07.039] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Revised: 07/13/2018] [Accepted: 07/17/2018] [Indexed: 12/26/2022]
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16
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Barbosa AI, Reis NM. A critical insight into the development pipeline of microfluidic immunoassay devices for the sensitive quantitation of protein biomarkers at the point of care. Analyst 2018; 142:858-882. [PMID: 28217778 DOI: 10.1039/c6an02445a] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The latest clinical procedures for the timely and cost-effective diagnosis of chronic and acute clinical conditions, such as cardiovascular diseases, cancer, chronic respiratory diseases, diabetes or sepsis (i.e. the biggest causes of death worldwide), involve the quantitation of specific protein biomarkers released into the blood stream or other physiological fluids (e.g. urine or saliva). The clinical thresholds are usually in the femtomolar to picolomar range, and consequently the measurement of these protein biomarkers heavily relies on highly sophisticated, bulky and automated equipment in centralised pathology laboratories. The first microfluidic devices capable of measuring protein biomarkers in miniaturised immunoassays were presented nearly two decades ago and promised to revolutionise point-of-care (POC) testing by offering unmatched sensitivity and automation in a compact POC format; however, the development and adoption of microfluidic protein biomarker tests has fallen behind expectations. This review presents a detailed critical overview into the pipeline of microfluidic devices developed in the period 2005-2016 capable of measuring protein biomarkers from the pM to fM range in formats compatible with POC testing, with a particular focus on the use of affordable microfluidic materials and compact low-cost signal interrogation. The integration of these two important features (essential unique selling points for the successful microfluidic diagnostic products) has been missed in previous review articles and explain the poor adoption of microfluidic technologies in this field. Most current miniaturised devices compromise either on the affordability, compactness and/or performance of the test, making current tests unsuitable for the POC measurement of protein biomarkers. Seven core technical areas, including (i) the selected strategy for antibody immobilisation, (ii) the surface area and surface-area-to-volume ratio, (iii) surface passivation, (iv) the biological matrix interference, (v) fluid control, (vi) the signal detection modes and (vii) the affordability of the manufacturing process and detection system, were identified as the key to the effective development of a sensitive and affordable microfluidic protein biomarker POC test.
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Affiliation(s)
- Ana I Barbosa
- Department of Chemical Engineering, Loughborough University, Loughborough, Leicestershire LE11 3TU, UK
| | - Nuno M Reis
- Department of Chemical Engineering, Loughborough University, Loughborough, Leicestershire LE11 3TU, UK and Department of Chemical Engineering, University of Bath, Claverton Down, Bath, BA2 7AY, UK.
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17
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Wu Z, Zhao D, Hou C, Liu L, Chen J, Huang H, Zhang Q, Duan Y, Li Y, Wang H. Enhanced immunofluorescence detection of a protein marker using a PAA modified ZnO nanorod array-based microfluidic device. NANOSCALE 2018; 10:17663-17670. [PMID: 30206611 DOI: 10.1039/c8nr05116j] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Zinc oxide (ZnO) often serves as protein microarray substrates owing to its outstanding fluorescence enhancement effect. However, the integration of functional substrates with microfluidic technology to detect cancer biomarkers still needs to be optimized and promoted, for example, the optimization of micro/nanostructure and hydrophilic modification strategies for fluorescence immunoassays. Here, ZnO nanorod arrays were constructed on the inner wall of glass capillaries through a microfluidic chemical method, and the electrostatic layer by layer self-assembly was applied to modify the nanorod array with hydrophilic polyelectrolyte-polyacrylic acid (PAA). The effects of the flow rate and the reagent concentration on the morphology of the ZnO nanorod array were investigated. The ZnO nanorod array-based glass capillary, prepared at 25 μL min-1 for 4 min with 50 mM Zn2+ in solution, showed a remarkable enhancement in fluorescence performance. In addition, the introduction of PAA suppressed the interference of nonspecific protein and improved the antibody loading capacity effectively. In the detection of carcinoembryonic antigen, the limit of detection reached 100 fg mL-1, which indicated that the ZnO@PAA nanorod array-based microfluidic device exhibits remarkable fluorescence detection performance towards protein markers and possesses potential to be applied to point-of-care diagnostics and high throughput cancer biomarker detection.
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Affiliation(s)
- Zhihua Wu
- State Key Laboratory for Modification of Chemical Fibres and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
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18
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Enhanced fluorescence detection of proteins using ZnO nanowires integrated inside microfluidic chips. Biosens Bioelectron 2018; 99:368-374. [DOI: 10.1016/j.bios.2017.08.003] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Revised: 07/22/2017] [Accepted: 08/02/2017] [Indexed: 11/22/2022]
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19
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Liu X, Song X, Dong Z, Meng X, Chen Y, Yang L. Photonic crystal fiber-based immunosensor for high-performance detection of alpha fetoprotein. Biosens Bioelectron 2017; 91:431-435. [DOI: 10.1016/j.bios.2016.12.058] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 12/20/2016] [Accepted: 12/29/2016] [Indexed: 10/20/2022]
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20
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Tang Z, Fu Y, Ma Z. Multiple signal amplification strategies for ultrasensitive label-free electrochemical immunoassay for carbohydrate antigen 24-2 based on redox hydrogel. Biosens Bioelectron 2016; 91:299-305. [PMID: 28033559 DOI: 10.1016/j.bios.2016.12.049] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 12/21/2016] [Accepted: 12/21/2016] [Indexed: 12/12/2022]
Abstract
In this work, multiple signal amplification strategies for ultrasensitive label-free electrochemical immunoassay for carbohydrate antigen 24-2 (CA242) were developed using redox sodium alginate-Pb2+-graphene oxide (SA-Pb2+-GO) hydrogel. The SA-Pb2+-GO hydrogel was synthesised by simply mixing SA, GO, and Pb2+ and then implemented as a novel redox species with a strong current signal at -0.46V (vs. Ag/AgCl). After the three-dimensional and porous SA-Pb2+-GO hydrogel was in situ generated on a glassy carbon electrode (GCE), chitosan was adsorbed on the obtained electrode to further enrich Pb2+. When chitosan-Pb2+/SA-Pb2+-GO/GCE was incubated with anti-CA242 using glutaraldehyde and blocked by bovine serum albumin, the immunoassay platform for CA242 was obtained. Owing to the addition of GO, the obtained conductive SA-GO/GCE was beneficial for signal amplification. After incubating SA-GO/GCE with excessive amounts of Pb2+, the resistance of SA-Pb2+-GO/GCE further decreased and a strong redox signal was obtained. The chitosan fixed by electrostatic adsorption resulted in further adsorption of Pb2+, behaving as further amplifying the signal and improving conductivity. In this case, multiple signal amplification strategies were involved in the proposed immunosensor for the ultrasensitive detection of CA242. Under the optimal conditions, the proposed immunosensor exhibited a wide linear range from 0.005UmL-1 to 500UmL-1 with an ultralow detection limit of 0.067mUmL-1. In comparison to previous works, the sensitivity of this method was 32.98μA (log10CCA242)-1, which was a five-fold increase from the previous works.
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Affiliation(s)
- Zhongxue Tang
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Yuanyuan Fu
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Zhanfang Ma
- Department of Chemistry, Capital Normal University, Beijing 100048, China.
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21
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Zhang WH, Ma W, Long YT. Redox-Mediated Indirect Fluorescence Immunoassay for the Detection of Disease Biomarkers Using Dopamine-Functionalized Quantum Dots. Anal Chem 2016; 88:5131-6. [DOI: 10.1021/acs.analchem.6b00048] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Wen-Hui Zhang
- Key Laboratory for Advanced
Materials and Department of Chemistry, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China
| | - Wei Ma
- Key Laboratory for Advanced
Materials and Department of Chemistry, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China
| | - Yi-Tao Long
- Key Laboratory for Advanced
Materials and Department of Chemistry, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China
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22
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Dixit CK, Kadimisetty K, Otieno BA, Tang C, Malla S, Krause CE, Rusling JF. Electrochemistry-based approaches to low cost, high sensitivity, automated, multiplexed protein immunoassays for cancer diagnostics. Analyst 2016; 141:536-47. [PMID: 26525998 PMCID: PMC4701586 DOI: 10.1039/c5an01829c] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Early detection and reliable diagnostics are keys to effectively design cancer therapies with better prognoses. The simultaneous detection of panels of biomarker proteins holds great promise as a general tool for reliable cancer diagnostics. A major challenge in designing such a panel is to decide upon a coherent group of biomarkers which have higher specificity for a given type of cancer. The second big challenge is to develop test devices to measure these biomarkers quantitatively with high sensitivity and specificity, such that there are no interferences from the complex serum or tissue matrices. Lastly, integrating all these tests into a technology that does not require exclusive training to operate, and can be used at point-of-care (POC) is another potential bottleneck in futuristic cancer diagnostics. In this article, we review electrochemistry-based tools and technologies developed and/or used in our laboratories to construct low-cost microfluidic protein arrays for the highly sensitive detection of a panel of cancer-specific biomarkers with high specificity which at the same time has the potential to be translated into POC applications.
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Affiliation(s)
- Chandra K. Dixit
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA
| | | | - Brunah A. Otieno
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA
| | - Chi Tang
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA
| | - Spundana Malla
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA
| | - Colleen E. Krause
- Department of Chemistry, University of Hartford, West Hartford, CT 06117, USA
| | - James F. Rusling
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA
- Department of Molecular and Cell Biology, University of Connecticut, Storrs, CT 06269, USA
- School of Chemistry, National University of Ireland at Galway, Ireland
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
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23
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3-D microarray and its microfabrication-free fluidic immunoassay device. Anal Chim Acta 2015; 889:187-93. [DOI: 10.1016/j.aca.2015.07.044] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Revised: 07/13/2015] [Accepted: 07/16/2015] [Indexed: 12/12/2022]
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24
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Dipalo M, Messina GC, Amin H, La Rocca R, Shalabaeva V, Simi A, Maccione A, Zilio P, Berdondini L, De Angelis F. 3D plasmonic nanoantennas integrated with MEA biosensors. NANOSCALE 2015; 7:3703-11. [PMID: 25640283 DOI: 10.1039/c4nr05578k] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Neuronal signaling in brain circuits occurs at multiple scales ranging from molecules and cells to large neuronal assemblies. However, current sensing neurotechnologies are not designed for parallel access of signals at multiple scales. With the aim of combining nanoscale molecular sensing with electrical neural activity recordings within large neuronal assemblies, in this work three-dimensional (3D) plasmonic nanoantennas are integrated with multielectrode arrays (MEA). Nanoantennas are fabricated by fast ion beam milling on optical resist; gold is deposited on the nanoantennas in order to connect them electrically to the MEA microelectrodes and to obtain plasmonic behavior. The optical properties of these 3D nanostructures are studied through finite elements method (FEM) simulations that show a high electromagnetic field enhancement. This plasmonic enhancement is confirmed by surface enhancement Raman spectroscopy of a dye performed in liquid, which presents an enhancement of almost 100 times the incident field amplitude at resonant excitation. Finally, the reported MEA devices are tested on cultured rat hippocampal neurons. Neurons develop by extending branches on the nanostructured electrodes and extracellular action potentials are recorded over multiple days in vitro. Raman spectra of living neurons cultured on the nanoantennas are also acquired. These results highlight that these nanostructures could be potential candidates for combining electrophysiological measures of large networks with simultaneous spectroscopic investigations at the molecular level.
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Affiliation(s)
- Michele Dipalo
- Istituto Italiano di Tecnologia (IIT), Via Morego 30, 16163 Genova, Italy.
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25
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Hu W, Liu Y, Chen T, Liu Y, Li CM. Hybrid ZnO nanorod-polymer brush hierarchically nanostructured substrate for sensitive antibody microarrays. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:181-185. [PMID: 25366876 DOI: 10.1002/adma.201403712] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 09/19/2014] [Indexed: 06/04/2023]
Abstract
A hierarchically nanostructured organic-inorganic hybrid substrate comprising randomly oriented ZnO nanorods on glass slide with coaxially tethered dense polymer brush, POEGMA-co-GMA is reported for highly sensitive antibody microassay, achieving excellent detection specificity, and superior detection limit of as low as 100 fg mL(-1) for biomarkers in human serum within a 1 h assay time.
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Affiliation(s)
- Weihua Hu
- Institute for Clean energy & Advanced Materials, Faculty of Materials and Energy, Southwest University, Chongqing, 400715, China; Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, Chongqing, 400715, China; Chongqing Engineering Research Center for Rapid diagnosis of Fatal Diseases, Chongqing, 400715, China
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26
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Singh A, Senapati K, Satpati B, Kumar M, Sahoo PK. Nanoscale interface engineering in ZnO twin nanorods for proposed phonon tunnel devices. Phys Chem Chem Phys 2015; 17:4277-82. [DOI: 10.1039/c4cp05369a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Crystalline–amorphous–crystalline junction nanorods synthesized using a hydrothermal route with nanoscale interface tunability achieved via the temperature ramping rate (Rr) of the aqueous solution, prior to attainment of the reaction temperature.
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Affiliation(s)
- Avanendra Singh
- School of Physical Sciences
- National Institute of Science Education and Research (NISER)
- Bhubaneswar
- India
| | - Kartik Senapati
- School of Physical Sciences
- National Institute of Science Education and Research (NISER)
- Bhubaneswar
- India
| | - Biswarup Satpati
- Surface physics & Materials Science Division
- Saha Institute of Nuclear Physics
- Kolkata
- India
| | - Mohit Kumar
- Institute of Physics
- Sachivalaya Marg
- Bhubaneswar
- India
| | - Pratap K. Sahoo
- School of Physical Sciences
- National Institute of Science Education and Research (NISER)
- Bhubaneswar
- India
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27
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Sensitive detection of multiple mycotoxins by SPRi with gold nanoparticles as signal amplification tags. J Colloid Interface Sci 2014; 431:71-6. [DOI: 10.1016/j.jcis.2014.06.007] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Revised: 04/15/2014] [Accepted: 06/04/2014] [Indexed: 01/24/2023]
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28
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Kim J, Kwon S, Park JK, Park I. Quantum dot-based immunoassay enhanced by high-density vertical ZnO nanowire array. Biosens Bioelectron 2014; 55:209-15. [DOI: 10.1016/j.bios.2013.12.007] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Revised: 11/21/2013] [Accepted: 12/02/2013] [Indexed: 11/17/2022]
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29
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Hu W, Chen H, Shi Z, Yu L. Dual signal amplification of surface plasmon resonance imaging for sensitive immunoassay of tumor marker. Anal Biochem 2014; 453:16-21. [DOI: 10.1016/j.ab.2014.02.022] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Revised: 02/20/2014] [Accepted: 02/22/2014] [Indexed: 12/11/2022]
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30
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Hu W, He G, Chen T, Guo CX, Lu Z, Selvaraj JN, Liu Y, Li CM. Graphene oxide-enabled tandem signal amplification for sensitive SPRi immunoassay in serum. Chem Commun (Camb) 2014; 50:2133-5. [DOI: 10.1039/c3cc47933a] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Hosseini S, Ibrahim F, Djordjevic I, Koole LH. Recent advances in surface functionalization techniques on polymethacrylate materials for optical biosensor applications. Analyst 2014; 139:2933-43. [DOI: 10.1039/c3an01789c] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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32
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Hu W, Li X, He G, Zhang Z, Zheng X, Li P, Li CM. Sensitive competitive immunoassay of multiple mycotoxins with non-fouling antigen microarray. Biosens Bioelectron 2013; 50:338-44. [DOI: 10.1016/j.bios.2013.06.037] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Revised: 06/09/2013] [Accepted: 06/19/2013] [Indexed: 01/29/2023]
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