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Clark KM, Nekoba DT, Viernes KL, Zhou J, Ray TR. Fabrication of high-resolution, flexible, laser-induced graphene sensors via stencil masking. Biosens Bioelectron 2024; 264:116649. [PMID: 39137522 PMCID: PMC11368413 DOI: 10.1016/j.bios.2024.116649] [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: 04/28/2024] [Revised: 07/19/2024] [Accepted: 08/07/2024] [Indexed: 08/15/2024]
Abstract
The advent of wearable sensing platforms capable of continuously monitoring physiological parameters indicative of health status have resulted in a paradigm shift for clinical medicine. The accessibility and adaptability of such portable, unobtrusive devices enables proactive, personalized care based on real-time physiological insights. While wearable sensing platforms exhibit powerful capabilities for continuously monitoring physiological parameters, device fabrication often requires specialized facilities and technical expertise, restricting deployment opportunities and innovation potential. The recent emergence of rapid prototyping approaches to sensor fabrication, such as laser-induced graphene (LIG), provides a pathway for circumventing these barriers through low-cost, scalable fabrication. However, inherent limitations in laser processing restrict the spatial resolution of LIG-based flexible electronic devices to the minimum laser spot size. For a CO2 laser-a commonly reported laser for device production-this corresponds to a feature size of ∼120 μm. Here, we demonstrate a facile, low-cost stencil-masking technique to reduce the minimum resolvable feature size of a LIG-based device from 120 ± 20 μm to 45 ± 3 μm when fabricated by CO2 laser. Characterization of device performance reveals this stencil-masked LIG (s-LIG) method yields a concomitant improvement in electrical properties, which we hypothesize is the result of changes in macrostructure of the patterned LIG. We showcase the performance of this fabrication method via production of common sensors including temperature and multi-electrode electrochemical sensors. We fabricate fine-line microarray electrodes not typically achievable via native CO2 laser processing, demonstrating the potential of the expanded design capabilities. Comparing microarray sensors made with and without the stencil to traditional macro LIG electrodes reveals the s-LIG sensors have significantly reduced capacitance for similar electroactive surface areas. Beyond improving sensor performance, the increased resolution enabled by this metal stencil technique expands capabilities for scalable fabrication of high-performance wearable sensors in low-resource settings without reliance on traditional fabrication pathways.
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Affiliation(s)
- Kaylee M Clark
- Department of Mechanical Engineering, University of Hawai'i at Mānoa, Honolulu, HI, 96822, USA
| | - Deylen T Nekoba
- Department of Mechanical Engineering, University of Hawai'i at Mānoa, Honolulu, HI, 96822, USA
| | - Kian Laʻi Viernes
- Department of Mechanical Engineering, University of Hawai'i at Mānoa, Honolulu, HI, 96822, USA
| | - Jie Zhou
- Department of Electrical Engineering, University of Hawai'i at Mānoa, Honolulu, HI, 96822, USA
| | - Tyler R Ray
- Department of Mechanical Engineering, University of Hawai'i at Mānoa, Honolulu, HI, 96822, USA; Department of Cell and Molecular Biology, John. A. Burns School of Medicine, University of Hawai'i at Mānoa, Honolulu, HI, 96813, USA.
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2
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Wang Y, Xue W, Duan Q, Zhang H. Regeneratable bioinspired nanochannels for highly sensitive electrochemical detection of glycated albumin. Talanta 2024; 281:126807. [PMID: 39236518 DOI: 10.1016/j.talanta.2024.126807] [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: 05/20/2024] [Revised: 08/05/2024] [Accepted: 09/02/2024] [Indexed: 09/07/2024]
Abstract
Glycated albumin (GA) has been proposed as a reliable diabetes mellitus marker particularly useful in assessing intermediate glycemic control. Herein, we designed a bioinspired nanochannels for biochemical detection based on the host-guest interaction between β-cyclodextrin and azobenzene. Cyclodextrin was grafted on the inner surface of nanochannels of a nanoporous membrane and azobenzene was tagged to the terminal of GA aptamer, thereby facilitating the orientation of GA aptamer in the nanochannels. The presence of GA was monitored by recording the voltammetric signal of ferricyanide that transported across the nanochannel array. The peak current exhibited a linearity relationship with the GA concentration across a broad range of 1.0 ng mL-1 to 100 μg mL-1, along with a detection limit of 0.18 ng mL-1. Notably, the aptamer could be offloaded under ultraviolet light, regenerating the cyclodextrin functionalized nanochannels for subsequent re-immobilization of the fresh aptamer. The relative standard deviation for seven cycles of regeneration treatment was no more than 1.8 %. The remarkable reusability of the nanochannels offered a cost-effective, sensitive and reproducible aptasensing platform.
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Affiliation(s)
- Yahui Wang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, China
| | - Wenwen Xue
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, China
| | - Qiannan Duan
- Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Sciences, Northwest University, Xi'an, 710127, China
| | - Hongfang Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, China.
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3
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Xia N, Gao F, Zhang J, Wang J, Huang Y. Overview on the Development of Electrochemical Immunosensors by the Signal Amplification of Enzyme- or Nanozyme-Based Catalysis Plus Redox Cycling. Molecules 2024; 29:2796. [PMID: 38930860 PMCID: PMC11206384 DOI: 10.3390/molecules29122796] [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: 04/21/2024] [Revised: 05/31/2024] [Accepted: 06/06/2024] [Indexed: 06/28/2024] Open
Abstract
Enzyme-linked electrochemical immunosensors have attracted considerable attention for the sensitive and selective detection of various targets in clinical diagnosis, food quality control, and environmental analysis. In order to improve the performances of conventional immunoassays, significant efforts have been made to couple enzyme-linked or nanozyme-based catalysis and redox cycling for signal amplification. The current review summarizes the recent advances in the development of enzyme- or nanozyme-based electrochemical immunosensors with redox cycling for signal amplification. The special features of redox cycling reactions and their synergistic functions in signal amplification are discussed. Additionally, the current challenges and future directions of enzyme- or nanozyme-based electrochemical immunosensors with redox cycling are addressed.
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Affiliation(s)
- Ning Xia
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
| | - Fengli Gao
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
| | - Jiwen Zhang
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
| | - Jiaqiang Wang
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
| | - Yaliang Huang
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China
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4
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Lu Y, Wen J, Wang C, Wang M, Jiang F, Miao L, Xu M, Li Y, Chen X, Chen Y. Mesophilic Argonaute-Based Single Polystyrene Sphere Aptamer Fluorescence Platform for the Multiplexed and Ultrasensitive Detection of Non-Nucleic Acid Targets. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2308424. [PMID: 38081800 DOI: 10.1002/smll.202308424] [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: 09/22/2023] [Revised: 11/13/2023] [Indexed: 01/04/2024]
Abstract
The rapid, simultaneous, and accurate identification of multiple non-nucleic acid targets in clinical or food samples at room temperature is essential for public health. Argonautes (Agos) are guided, programmable, target-activated, next-generation nucleic acid endonucleases that could realize one-pot and multiplexed detection using a single enzyme, which cannot be achieved with CRISPR/Cas. However, currently reported thermophilic Ago-based multi-detection sensors are mainly employed in the detection of nucleic acids. Herein, this work proposes a Mesophilic Argonaute Report-based single millimeter Polystyrene Sphere (MARPS) multiplex detection platform for the simultaneous analysis of non-nucleic acid targets. The aptamer is utilized as the recognition element, and a single millimeter-sized polystyrene sphere (PSmm) with a large concentration of guide DNA on the surface served as the microreactor. These are combined with precise Clostridium butyricum Ago (CbAgo) cleavage and exonuclease I (Exo I) signal amplification to achieve the efficient and sensitive recognition of non-nucleic acid targets, such as mycotoxins (<60 pg mL-1) and pathogenic bacteria (<102 cfu mL-1). The novel MARPS platform is the first to use mesophilic Agos for the multiplex detection of non-nucleic acid targets, overcoming the limitations of CRISPR/Cas in this regard and representing a major advancement in non-nucleic acid target detection using a gene-editing-based system.
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Affiliation(s)
- Yingying Lu
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Junping Wen
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Chengming Wang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Mengjiao Wang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Feng Jiang
- Laboratory of Detection Technology of Focus Chemical Hazards in Animal-derived Food for State Market Regulation, Hubei Provincial Institute for Food Supervision and Test, Wuhan, 430075, China
| | - Lin Miao
- Department of Laboratory Medicine, General Hospital of Central Theater Command, Wuhan, 430070, China
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, 510515, China
| | - Minggao Xu
- Department of Laboratory Medicine, General Hospital of Central Theater Command, Wuhan, 430070, China
| | - Yingjun Li
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Xiaohua Chen
- Department of Laboratory Medicine, General Hospital of Central Theater Command, Wuhan, 430070, China
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, 510515, China
| | - Yiping Chen
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
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Plikusiene I, Ramanaviciene A. Investigation of Biomolecule Interactions: Optical-, Electrochemical-, and Acoustic-Based Biosensors. BIOSENSORS 2023; 13:bios13020292. [PMID: 36832058 PMCID: PMC9954023 DOI: 10.3390/bios13020292] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 02/16/2023] [Indexed: 05/24/2023]
Abstract
Today, optical, electrochemical, and acoustic affinity biosensors; immunosensors; and immunoanalytical systems play an important role in the detection and characterization of a number of biological substances, including viral antigens, specific antibodies, and clinically important biomarkers [...].
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Affiliation(s)
- Ieva Plikusiene
- NanoTechnas—Center of Nanotechnology and Materials Science, Faculty of Chemistry and Geosciences, Vilnius University, LT-03225 Vilnius, Lithuania
- State Research Institute Center for Physical Sciences and Technology, LT-10257 Vilnius, Lithuania
| | - Almira Ramanaviciene
- NanoTechnas—Center of Nanotechnology and Materials Science, Faculty of Chemistry and Geosciences, Vilnius University, LT-03225 Vilnius, Lithuania
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6
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Jiang L, Chen P, Zha L, Liu J, Sun D, Dai C, Li Y, Miao Y, Ouyang R. Enhanced catalytic amplification of mesoporous bismuth-gold nano-electrocatalyst triggering efficient capture of tumor marker. Colloids Surf B Biointerfaces 2022; 220:112924. [DOI: 10.1016/j.colsurfb.2022.112924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 09/30/2022] [Accepted: 10/10/2022] [Indexed: 11/07/2022]
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7
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Safenkova IV, Burkin KM, Bodulev OL, Razo SC, Ivanov AV, Zherdev AV, Dzantiev BB, Sakharov IY. Comparative study of magnetic beads and microplates as supports in heterogeneous amplified assay of miRNA-141 by using mismatched catalytic hairpin assembly reaction. Talanta 2022; 247:123535. [DOI: 10.1016/j.talanta.2022.123535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 04/08/2022] [Accepted: 05/06/2022] [Indexed: 11/16/2022]
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8
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Wang X, Yang J, Xie Y, Lai G. Dual DNAzyme-catalytic assembly of G-quadruplexes for inducing the aggregation of gold nanoparticles and developing a novel antibiotic assay method. Mikrochim Acta 2022; 189:262. [PMID: 35727378 DOI: 10.1007/s00604-022-05362-x] [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: 01/07/2022] [Accepted: 05/27/2022] [Indexed: 11/28/2022]
Abstract
By utilizing a target biorecognition reaction to induce the self-assembly of G-quadruplexes and the aggregation of gold nanoparticles (Au NPs), this work develops a novel colorimetric biosensing method for kanamycin (Kana) antibiotic detection. The compact G-quadruplex structure was assembled from its two half-split sequences which were designed in two hairpin substrates of the Mg2+-dependent DNAzyme (MNAzyme). Besides hybridizing with the aptamer strand, the MNAzyme sequence was also split into two half fragments to be designed in the two substrates. Upon the aptamer-recognition reaction toward Kana, the MNAzyme strand could be quantitatively released to cause the exposure of the split G-quadruplex-sequences on two hairpin substrate-modified Au NPs and simultaneous release of two half fragments of the MNAzyme-sequence. Thus, the K+-assisted self-folding of G-quadruplexes causes the cross-linking of the two Au NPs to realize the Au NP aggregation-based colorimetric signal output (measured at the largest absorption peak near 520 nm). Meanwhile, the self-assembled formation of the second MNAzyme drastically amplified the signal response. Under the optimal conditions, a wide linear range from 0.1 pg mL-1 to 10 ng mL-1 and an ultrahigh sensitivity with the detection limit of 76 fg mL-1 were obtained. The dose-recovery experiments in real samples showed satisfactory results with recoveries from 98.4 to 105.4% and relative errors compared with the ELISA method less than 4.1%. Due to the high selectivity, excellent repeatability and stability, and simple manipulation, this method indicates a promising potential for practical applications. A novel homogeneous biosensing method was developed for the convenient detection of the kanamycin antibiotic. The target biorecognition-induced and dual DNAzyme-catalytic assembly of G-quadruplexes enabled the amplified aggregation of gold nanoparticles for the simple, cheap, stable, and ultrasensitive colorimetric signal transduction of the method.
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Affiliation(s)
- Xiaojun Wang
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi, 435002, China
| | - Jingru Yang
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi, 435002, China
| | - Yiming Xie
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi, 435002, China
| | - Guosong Lai
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi, 435002, China.
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9
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Portable flow multiplexing device for continuous, in situ biodetection of environmental contaminants. SENSING AND BIO-SENSING RESEARCH 2022. [DOI: 10.1016/j.sbsr.2022.100505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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10
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Bezuneh TT, Fereja TH, Kitte SA, Li H, Jin Y. Gold nanoparticle-based signal amplified electrochemiluminescence for biosensing applications. Talanta 2022; 248:123611. [PMID: 35660995 DOI: 10.1016/j.talanta.2022.123611] [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: 12/09/2021] [Revised: 04/05/2022] [Accepted: 05/25/2022] [Indexed: 10/18/2022]
Abstract
Since the content levels of biomarkers at the early stage of many diseases are generally lower than the detection threshold concentration, achieving ultrasensitive and accurate detection of these biomarkers is still one of the major goals in bio-analysis. To achieve ultrasensitive and reliable bioassay, it requires developing highly sensitive biosensors. Among all kinds of biosensors, electrogenerated chemiluminescence (ECL) based biosensors have attracted enormous attention due to their excellent properties. In order to improve the performance of ECL biosensors, gold nanoparticles (Au NPs) have been widely utilized as signal amplification tags. The introduction of Au NPs could dramatically enhance the performance of the constructed ECL biosensors via diverse ways such as electrode modification material, efficient energy acceptor in ECL resonant energy transfer (ECL-RET), reaction catalyst, surface plasmon resonance (SPR) enhancer, and as nanocarrier. Herein, we summarize recent developments and progress of ECL biosensors based on Au NPs signal amplification strategies. We will cover ECL applications of Au NPs as a signal amplification tag in the detection of proteins, metal ions, nucleic acids, small molecules, living cells, exosomes, and cell imaging. Finally, brief summary and future outlooks of this field will be presented.
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Affiliation(s)
- Terefe Tafese Bezuneh
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, No. 5625 Renmin Street, Changchun, 130022, PR China; University of Science and Technology of China, Hefei, 230026, PR China; Department of Chemistry, College of Natural Sciences, Arbaminch University, P.O. Box 21, Arbaminch, Ethiopia
| | - Tadesse Haile Fereja
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, No. 5625 Renmin Street, Changchun, 130022, PR China; Department of Pharmacy, College of Medicine and Health Science, Ambo University, P.O. Box 19, Ambo, Ethiopia
| | - Shimeles Addisu Kitte
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, No. 5625 Renmin Street, Changchun, 130022, PR China
| | - Haijuan Li
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, No. 5625 Renmin Street, Changchun, 130022, PR China.
| | - Yongdong Jin
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, No. 5625 Renmin Street, Changchun, 130022, PR China; University of Science and Technology of China, Hefei, 230026, PR China.
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Su Z, Tang D, Yang X, Peng Y, Wang B, Li X, Chen J, Hu Y, Qin X. Selective and fast growth of CdS nanocrystals on zinc (II) metal–organic framework architectures for photoelectrochemical response and electrochemical immunosensor of foot-and-mouth disease virus. Microchem J 2022. [DOI: 10.1016/j.microc.2021.107038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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12
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Zhang YJ, Yang Y, Wang JM, Liang WB, Yuan R, Xiao DR. Electrochemiluminescence enhanced by isolating ACQphores in pyrene-based porous organic polymer: A novel ECL emitter for the construction of biosensing platform. Anal Chim Acta 2022; 1206:339648. [DOI: 10.1016/j.aca.2022.339648] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/31/2022] [Accepted: 02/22/2022] [Indexed: 12/11/2022]
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Feng J, Chu C, Ma Z. Electrochemical Signal Substance for Multiplexed Immunosensing Interface Construction: A Mini Review. Molecules 2022; 27:267. [PMID: 35011499 PMCID: PMC8746521 DOI: 10.3390/molecules27010267] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 12/23/2021] [Accepted: 12/30/2021] [Indexed: 11/17/2022] Open
Abstract
Appropriate labeling method of signal substance is necessary for the construction of multiplexed electrochemical immunosensing interface to enhance the specificity for the diagnosis of cancer. So far, various electrochemical substances, including organic molecules, metal ions, metal nanoparticles, Prussian blue, and other methods for an electrochemical signal generation have been successfully applied in multiplexed biosensor designing. However, few works have been reported on the summary of electrochemical signal substance applied in constructing multiplexed immunosensing interface. Herein, according to the classification of labeled electrochemical signal substance, this review has summarized the recent state-of-art development for the designing of electrochemical immunosensing interface for simultaneous detection of multiple tumor markers. After that, the conclusion and prospects for future applications of electrochemical signal substances in multiplexed immunosensors are also discussed. The current review can provide a comprehensive summary of signal substance selection for workers researched in electrochemical sensors, and further, make contributions for the designing of multiplexed electrochemical immunosensing interface with well signal.
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Affiliation(s)
| | | | - Zhanfang Ma
- Department of Chemistry, Capital Normal University, Beijing 100048, China; (J.F.); (C.C.)
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14
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Liu G, Ling J, Li J. Extremely Sensitive Molecularly Imprinted ECL Sensor with Multiple Probes Released from Liposomes Immobilized by a Light-Triggered Click Reaction. ACS Sens 2021; 6:4185-4192. [PMID: 34662113 DOI: 10.1021/acssensors.1c01763] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A molecularly imprinted electrochemiluminescence sensor was prepared for sensitive and selective determination of aminotriazole via a novel strategy of multiple Ru(bpy)3Cl2 probes released from liposomes immobilized by a light-triggered click reaction. This sensing strategy provides a platform for trace detection of amino-containing pesticides. The target on the molecularly imprinted membrane connected to the Ru(bpy)3Cl2-encapsulated liposomes via the click reaction. After the destabilizing agent Triton X-100 was added, numerous Ru(bpy)3Cl2 molecules were released by liposomes on the molecularly imprinted polymer electrode. The ECL response of the sensor was linearly proportional to the logarithm of the aminotriazole concentration ranging from 5.00 × 10-18 to 1.00 × 10-12 mol/L, and the detection limit was 1.15 × 10-18 mol/L. The sensitivity of the detection was significantly improved, and the analysis process was simplified.
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Affiliation(s)
- Guangyan Liu
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, P. R. China
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, P. R. China
| | - Jun Ling
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, P. R. China
| | - Jianping Li
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, P. R. China
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, P. R. China
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15
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Xie Y, Wang H, Yuwen X, Lai G. Exo III-Catalyzed Release of a Zn 2+-Ligation DNAzyme to Drive the Strand Displacement Reaction and Gold Aggregation for the Homogeneous Bioassay of Kanamycin Antibiotics. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:10371-10378. [PMID: 34436884 DOI: 10.1021/acs.jafc.1c04030] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Herein, we combine the exonuclease III (Exo III)-catalyzed release of a Zn2+-dependent ligation DNAzyme with the DNAzyme-driven strand displacement reaction (SDR) to develop a novel homogeneous colorimetric bioassay method for kanamycin (Kana) antibiotic detection. Upon the biorecognition reaction between Kana and a designed hairpin DNA, the DNAzyme-containing strand can be catalytically released by Exo III. Then, this DNAzyme will catalyze the ligation of two oligonucleotides to cause a SDR and the aggregation of gold nanoparticles (Au NPs) labeled by two linker DNA strands. Due to the aggregation of Au NPs for colorimetric signal transduction and the Exo III and SDR-assisted dual signal amplification, this method shows a wide linear range of 5 orders of magnitude and a very low detection limit down to 8.1 fg mL-1. Together with its excellent selectivity, repeatability, reliability, and convenient manipulation, the proposed method shows a great potential for the food quality monitoring application.
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Affiliation(s)
- Yiming Xie
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi 435002, PR China
| | - Haiyan Wang
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi 435002, PR China
| | - Xinyue Yuwen
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi 435002, PR China
| | - Guosong Lai
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi 435002, PR China
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16
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Meng W, Li M, Zhang Y. Adriamycin coated silica microspheres as labels for cancer biomarker alpha-fetoprotein detection. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:2665-2670. [PMID: 34046653 DOI: 10.1039/d1ay00655j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Adriamycin (ADM)-coated silica microspheres as a label for the sensitive detection of a cancer biomarker alpha-fetoprotein (AFP) was reported. Silica microspheres (SiO2 MSs) were employed as the carrier for the immobilization of gold nanoparticles (Au NPs), secondary antibody (Ab2) and ADM (denote: ADM@Au NPs@SiO2 MS/Ab2) as labels. In the presence of AFP, the labels were captured on the surface of the Au NP-reduced graphene oxide (rGO) (Au NP-rGO) nanocomposites to form a sandwich structure vs. the specific recognition of antibody-antigen. In a pH 7.4 phosphate buffer solution, a well-defined peak of ADM at about -0.70 V (vs. SCE) was recorded via differential pulse voltammetry, the peak intensity of which was related to the concentration of AFP. Under optimal experimental conditions, the immunoassay exhibited a wide linear range (0.5 pg mL-1 to 75 ng mL-1) and low limit of detection (0.17 pg mL-1). Further, the immunoassay was evaluated for serum samples, which gave satisfactory results.
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Affiliation(s)
- Wenwen Meng
- College of Chemistry and Materials Science, Anhui Key Laboratory of Chemo-Biosensing, Anhui Normal University, Wuhu 241000, People's Republic of China.
| | - Mengyao Li
- College of Chemistry and Materials Science, Anhui Key Laboratory of Chemo-Biosensing, Anhui Normal University, Wuhu 241000, People's Republic of China.
| | - Yuzhong Zhang
- College of Chemistry and Materials Science, Anhui Key Laboratory of Chemo-Biosensing, Anhui Normal University, Wuhu 241000, People's Republic of China.
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Jiaul Haque A, Kwon J, Kim J, Kim G, Lee N, Ho Yoon Y, Yang H. Sensitive and Low‐background Electrochemical Immunosensor Employing Glucose Dehydrogenase and 1,10‐Phenanthroline‐5,6‐dione. ELECTROANAL 2021. [DOI: 10.1002/elan.202100079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Al‐Monsur Jiaul Haque
- Department of Chemistry and Chemistry Institute for Functional Materials Pusan National University Busan 46241 Korea
| | - Jungwook Kwon
- Department of Chemistry and Chemistry Institute for Functional Materials Pusan National University Busan 46241 Korea
| | - Jihyeon Kim
- Department of Chemistry and Chemistry Institute for Functional Materials Pusan National University Busan 46241 Korea
| | - Gyeongho Kim
- Department of Chemistry and Chemistry Institute for Functional Materials Pusan National University Busan 46241 Korea
| | | | | | - Haesik Yang
- Department of Chemistry and Chemistry Institute for Functional Materials Pusan National University Busan 46241 Korea
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18
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Ti 3C 2 MXene mediated Prussian blue in situ hybridization and electrochemical signal amplification for the detection of exosomes. Talanta 2021; 224:121879. [PMID: 33379088 DOI: 10.1016/j.talanta.2020.121879] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 11/03/2020] [Accepted: 11/06/2020] [Indexed: 11/22/2022]
Abstract
Exosomes carrying abundant information have aroused great interest as effective biomarkers in liquid biopsy and are therefore ideal candidates for the early diagnosis of cancer and treatment monitoring. Herein, we developed a sensitive electrochemical biosensor using in situ generation of Fe₄[Fe(CN)6]₃ (Prussian Blue) on the surface of Ti3C2 MXene (two-dimensional transition-metal carbides) as hybrid nanoprobes (PB-MXene) for the detection of exosomes and their surface protein. A CD63 aptamer-modified poly(amidoamine) (PAMAM)-Au NP electrode interface was fabricated that can specifically bind with CD63 protein on the exosomes derived from OVCAR cells. In addition, the CD63-modified Ti3C2 MXene was used as a nanocarrier to accommodate numerous aptamers and was adsorbed on the exosomes. The Ti3C2 MXene can realize the in situ generation and high-efficiency loading of PB and further amplify the electrochemical signal at a low potential, thus avoiding the interference of the electrochemical active species. The dual amplification effect enables highly selective and sensitive electrochemical detection of exosomes. The limit of detection (LOD) was 229 particles μL-1 with a linear range from 5 × 102 particles μL-1 to 5 × 105 particles μL-1. An electrochemical biosensor can detect exosomes secreted by various cancer cells such as HeLa, OVCAR and BT474, and shows a high specificity even in serum samples, thus demonstrating its great potential in the application of clinical diagnostics. This proposed electrochemical biosensor provides a facile and efficient tool for the early diagnosis of cancers.
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19
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Recent advances in sensitivity enhancement for lateral flow assay. Mikrochim Acta 2021; 188:379. [PMID: 34647157 PMCID: PMC8513549 DOI: 10.1007/s00604-021-05037-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 09/25/2021] [Indexed: 12/04/2022]
Abstract
Conventional lateral flow assay (LFA) is typically performed by observing the color changes in the test lines by naked eyes, which achieves considerable commercial success and has a significant impact on the fields of food safety, environment monitoring, disease diagnosis, and other applications. However, this qualitative detection method is not very suitable for low levels of disease biomarkers' detection. Although many nanomaterials are used as new labels for LFA, additional readers limit their application to some extent. Fortunately, a lot of work has been done for improving the sensitivity of LFA. In this review, currently reported LFA sensitivity enhancement methods with an objective evaluation are summarized, such as sample pretreatment, the change of flow rate, and label evolution, and future development direction and challenges of LFAs are discussed.
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Zhang K, Li H, Wang W, Cao J, Gan N, Han H. Application of Multiplexed Aptasensors in Food Contaminants Detection. ACS Sens 2020; 5:3721-3738. [PMID: 33284002 DOI: 10.1021/acssensors.0c01740] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The existence of contaminants in food poses a serious threat to human health. In recent years, aptamer sensors (aptasensors) have been developed rapidly for the detection of food contaminants because of their high specificity, design flexibility, and high efficiency. However, the development of high-throughput, highly sensitive, on-site, and cost-effective methods for simultaneous detection of food contaminants is still restricted due to multiple signal overlap or mutual interference and cross-reaction between different analytes with similar molecular structures. To overcome these problems, this Review summarizes some effective strategies from the articles published in recent years about multiplexed aptasensors for the simultaneous detection of food contaminants. This work focuses on the application of multiplexed aptasensors to simultaneously detect antibiotics, pathogens, and mycotoxins in food. These aptasensors mainly contain fluorescent aptasensors, electrochemical aptasensors, surface-enhanced Raman scattering-based aptasensors, microfluidic chip aptasensors, and paper-based multiplexed aptasensors. In addition, this Review also covers the application of nucleic acid cycle amplification and nanomaterial amplification strategies to improve the detection sensitivity. Finally, the limitations and challenges in the design of multiplexed aptasensor are also taken into account.
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Affiliation(s)
- Kai Zhang
- The State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, College of Science, Huazhong Agricultural University, Wuhan 430070, Hubei, P.R. China
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Faculty of Material Science and Chemical Engineering, Ningbo University, Ningbo 315211, P.R. China
| | - Hongyang Li
- College of Life Science, Henan Agricultural University, Zhengzhou 450002, Henan, P.R. China
| | - Wenjing Wang
- The State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, College of Science, Huazhong Agricultural University, Wuhan 430070, Hubei, P.R. China
| | - Jinxuan Cao
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Faculty of Material Science and Chemical Engineering, Ningbo University, Ningbo 315211, P.R. China
| | - Ning Gan
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Faculty of Material Science and Chemical Engineering, Ningbo University, Ningbo 315211, P.R. China
| | - Heyou Han
- The State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, College of Science, Huazhong Agricultural University, Wuhan 430070, Hubei, P.R. China
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21
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Karimzadeh Z, Hasanzadeh M, Isildak I, Khalilzadeh B. Multiplex bioassaying of cancer proteins and biomacromolecules: Nanotechnological, structural and technical perspectives. Int J Biol Macromol 2020; 165:3020-3039. [PMID: 33122068 DOI: 10.1016/j.ijbiomac.2020.10.191] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 10/07/2020] [Accepted: 10/24/2020] [Indexed: 12/19/2022]
Abstract
Since the specific proteins (carbohydrate antigens, ligands and interleukins) get raised up in body tissue or fluids in cancer cases, early detection of them will provide an effective treatment and survival rate. Sensitive and accurate determination of multiple cancer proteins can be engaged in chorus by simultaneous/multiplex detection in the biomedical fields. Bioassaying technology is one of the non-invasive, high-sensitive, and economical methods. Currently, extensive application of nanomaterial (biocompatible polymers, metallic and metal oxide) in bioassays resulted in ultra-high sensitive and selective diagnosis. This review article focuses on types of multiplex bioassays for delicate and specific determination of cancer proteins for diagnostic aims. It also covers two modes of multiplex bioassays as multi labeled bioassays and spatially-separated test zones (multi-electrode mode). In this review, the nanotechnological, structural, and technical perspectives in the multiplex analysis of cancer proteins were discussed. Finally, the use of different types of nanomaterials, polysaccharides, biopolymers and their advantages in signal amplification are discussed.
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Affiliation(s)
- Zahra Karimzadeh
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Hasanzadeh
- Pharmaceutical Analysis Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ibrahim Isildak
- Department of Bioengineering, Faculty of Chemistry-Metallurgy, Yildiz Technical University, 34220 Istanbul, Turkey
| | - Balal Khalilzadeh
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Biosensor Sciences and Technologies Research Center (BSTRC), Ardabil University of Medical Sciences, Ardabil, Iran.
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22
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Gao X, Wang Q, Cheng C, Lin S, Lin T, Liu C, Han X. The Application of Prussian Blue Nanoparticles in Tumor Diagnosis and Treatment. SENSORS (BASEL, SWITZERLAND) 2020; 20:E6905. [PMID: 33287186 PMCID: PMC7730465 DOI: 10.3390/s20236905] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 11/30/2020] [Accepted: 11/30/2020] [Indexed: 12/15/2022]
Abstract
Prussian blue nanoparticles (PBNPs) have attracted increasing research interest in immunosensors, bioimaging, drug delivery, and application as therapeutic agents due to their large internal pore volume, tunable size, easy synthesis and surface modification, good thermal stability, and favorable biocompatibility. This review first outlines the effect of tumor markers using PBNPs-based immunosensors which have a sandwich-type architecture and competitive-type structure. Metal ion doped PBNPs which were used as T1-weight magnetic resonance and photoacoustic imaging agents to improve image quality and surface modified PBNPs which were used as drug carriers to decrease side effects via passive or active targeting to tumor sites are also summarized. Moreover, the PBNPs with high photothermal efficiency and excellent catalase-like activity were promising for photothermal therapy and O2 self-supplied photodynamic therapy of tumors. Hence, PBNPs-based multimodal imaging-guided combinational tumor therapies (such as chemo, photothermal, and photodynamic therapies) were finally reviewed. This review aims to inspire broad interest in the rational design and application of PBNPs for detecting and treating tumors in clinical research.
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Affiliation(s)
| | | | - Cui Cheng
- College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, China; (X.G.); (Q.W.); (S.L.); (T.L.); (C.L.); (X.H.)
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23
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Deng L, Lai G, Fu L, Lin CT, Yu A. Enzymatic deposition of gold nanoparticles at vertically aligned carbon nanotubes for electrochemical stripping analysis and ultrasensitive immunosensing of carcinoembryonic antigen. Analyst 2020; 145:3073-3080. [PMID: 32142088 DOI: 10.1039/c9an02633a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Herein we combine the sandwich immunoreaction at a vertically aligned single-walled carbon nanotube (SWCNT)-based immunosensor and the enzymatically catalytic deposition of gold nanoparticles (Au NPs) by a gold nanoprobe to develop a novel electrochemical immunosensing method. The vertically arranged nanostructure was prepared through the covalent linking of terminally carboxylated SWCNTs at an aryldiazonium-modified electrode. It not only provides an excellent platform for the high density immobilization of antibodies to obtain the immunosensor but also serves as useful molecular wires to accelerate electron transfer during the electrochemical immunosensing process. Meanwhile, the enzymatic reaction of the nanoprobe prepared by surface functionalization of the nanocarrier of Au NPs by high-content glucoamylases can catalyze the deposition of a large number of Au NPs at the immunosensor. The electrochemical stripping analysis of these nanoparticles enabled the convenient signal transduction of the method. Due to the sensitive gold stripping analysis at the vertically aligned SWCNTs and the multi-enzyme signal amplification of the nanoprobe, the electrochemical signal response was greatly enhanced. Thus, the method can be used for the ultrasensitive detection of the tumor biomarker of carcinoembryonic antigen in a wide linear range of 5 orders of magnitude with a low detection limit of 0.48 pg mL-1. Considering its obvious performance superiorities, this immunosensing method exhibits an extensive prospect for practical applications.
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Affiliation(s)
- Liling Deng
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, Department of Chemistry, Hubei Normal University, Huangshi 435002, China.
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24
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Triroj N, Saensak R, Porntheeraphat S, Paosawatyanyong B, Amornkitbamrung V. Diamond-Like Carbon Thin Film Electrodes for Microfluidic Bioelectrochemical Sensing Platforms. Anal Chem 2020; 92:3650-3657. [DOI: 10.1021/acs.analchem.9b04689] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Napat Triroj
- Department of Electrical Engineering, Faculty of Engineering, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Rattanakorn Saensak
- Department of Electrical Engineering, Faculty of Engineering, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Supanit Porntheeraphat
- Thai Microelectronics Center (TMEC), Chachoengsao 24000, Thailand
- National Electronics and Computer Technology Center, Pathum Thani 12120, Thailand
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25
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Li J, Zheng H, He Y, Chen B, Liu L, Ouyang Y, Zhu C, Zhou Y, Sun J, Hu Z, Wang B. Ultrasensitive Electrochemical Immunosensor Reveals the Existence of Silk Products on the Maritime Silk Road. ACS Sens 2019; 4:3203-3209. [PMID: 31773952 DOI: 10.1021/acssensors.9b01638] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The Maritime Silk Road was the major trade route between eastern and western civilizations in the Middle Ages. However, hardly any silk products have been found along the transoceanic trade route. Thus, the extrasensitive detection of silk relic traces has tremendous importance in research regarding the Maritime Silk Road. In this study, an electrochemical immunosensor based on a tailored monoclonal antibody and gold nanoparticles using the layer-by-layer self-assembly method was devised. The fabricated immunosensor demonstrated preeminent performance in the analysis of silk fibroin, with a linear detection range of 0.01-100 ng mL-1 and a detection limit of 3.8 pg mL-1. In particular, the performance of the immunosensor was excellent in the analysis of ancient silk samples, especially in the qualitative and quantitative detection of soil samples extracted from Nanhai No. 1 shipwreck archeological sites. The proposed electrochemical immunosensor proves the existence of silk products on the Maritime Silk Road and demonstrates enormous potential for studying the formation and development of the ancient transoceanic trading route.
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Affiliation(s)
| | - Hailing Zheng
- Key Scientific Research Base of Textile Conservation, State Administration for Cultural Heritage, China National Silk Museum, Hangzhou 310002, China
| | | | | | | | | | | | - Yang Zhou
- Key Scientific Research Base of Textile Conservation, State Administration for Cultural Heritage, China National Silk Museum, Hangzhou 310002, China
| | - Jian Sun
- Conservation Center of Underwater Cultural Heritage, National Cultural Heritage Administration, Beijing 100192, China
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26
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Filik H, Avan AA. Nanostructures for nonlabeled and labeled electrochemical immunosensors: Simultaneous electrochemical detection of cancer markers: A review. Talanta 2019; 205:120153. [PMID: 31450406 DOI: 10.1016/j.talanta.2019.120153] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 07/09/2019] [Accepted: 07/12/2019] [Indexed: 12/14/2022]
Abstract
The simultaneous electrochemical determination of multiple tumor antigens has attracted a great deal of attention, which can effectively enhance the capability and accuracy of the analysis. Nanostructured materials mostly played a key major role in the electrochemical immunosensors fabrication and operation improvement. This review focused mainly on the protocols for using nanostructures to fabricate electrochemical (nonlabeled@label-free and labeled@sandwich-type) immunosensors. Furthermore, this review has also described the diverse classes of electroactive nanospecies which are a complementary part of any immunosensor that assists to reach the selectivity for the target antigen. Finally, the important analytical characteristics of the published immunosensors were discussed (electrochemical detection technique, linear range, and detection limit). Studies published between the years 2009-2018 have been included in this review.
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Affiliation(s)
- Hayati Filik
- Istanbul University-Cerrahpaşa, Faculty of Engineering, Department of Chemistry, 34320 Avcılar, Istanbul, Turkey.
| | - A Aslıhan Avan
- Istanbul University-Cerrahpaşa, Faculty of Engineering, Department of Chemistry, 34320 Avcılar, Istanbul, Turkey
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27
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Bai L, Chen Y, Liu X, Zhou J, Cao J, Hou L, Guo S. Ultrasensitive electrochemical detection of Mycobacterium tuberculosis IS6110 fragment using gold nanoparticles decorated fullerene nanoparticles/nitrogen-doped graphene nanosheet as signal tags. Anal Chim Acta 2019; 1080:75-83. [PMID: 31409477 DOI: 10.1016/j.aca.2019.06.043] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 06/19/2019] [Accepted: 06/21/2019] [Indexed: 02/05/2023]
Abstract
Tuberculosis (TB), caused by Mycobacterium tuberculosis (MTB), remains the top fatal infection continuing to threat public health, and the present detection method for MTB is facing great challenges with the global TB burden. In response to this issue, a novel electrochemical DNA biosensor was developed for detecting the IS6110 fragment within MTB. For the first time, the nanohybrid of gold nanoparticles decorated fullerene nanoparticles/nitrogen-doped graphene nanosheet (Au-nano-C60/NGS) directly served as a new signal tag to generate signal response without additional redox molecules and subsequently labeled with signal probes (SPs) to form tracer label to achieve signal amplification. Additionally, a biotin-avidin system was introduced to immobilize abundant capture probes (CPs), further improving the sensitivity of the proposed biosensor. After a typical sandwich hybridization, the proposed electrochemical DNA biosensor was incubated with tetraoctylammonium bromide (TOAB), which was used as a booster to induce the intrinsic redox activity of the tracer label, resulting in a discriminating current response. The proposed electrochemical DNA biosensor shows a broad linear range for MTB determination from 10 fM to 10 nM with a low limit of detection (LOD) of 3 fM. In addition, this proposed biosensor not only distinguishes mismatched DNA sequence, but also differentiates MTB from other pathogenic agents. More importantly, it has been preliminarily applied in clinical detection and displayed excellent ability to identify the PCR products of clinical samples. There is great potential for this developed method to be used in early diagnosis and monitor of TB.
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Affiliation(s)
- Lijuan Bai
- Engineering Technology Research Center for Pharmacodynamic Evaluation of Chongqing, College of Pharmacy, Chongqing Medical University, Chongqing, 400016, PR China
| | - Yuhan Chen
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China
| | - Xinzhu Liu
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China
| | - Jing Zhou
- Engineering Technology Research Center for Pharmacodynamic Evaluation of Chongqing, College of Pharmacy, Chongqing Medical University, Chongqing, 400016, PR China
| | - Jun Cao
- Department of Respiratory and Critical Care Medicine, West China Hospital of Sichuan University, Chengdu, 610041, PR China
| | - Liang Hou
- Engineering Technology Research Center for Pharmacodynamic Evaluation of Chongqing, College of Pharmacy, Chongqing Medical University, Chongqing, 400016, PR China
| | - Shuliang Guo
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China.
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Wang Y, Luo J, Liu J, Sun S, Xiong Y, Ma Y, Yan S, Yang Y, Yin H, Cai X. Label-free microfluidic paper-based electrochemical aptasensor for ultrasensitive and simultaneous multiplexed detection of cancer biomarkers. Biosens Bioelectron 2019; 136:84-90. [PMID: 31039491 DOI: 10.1016/j.bios.2019.04.032] [Citation(s) in RCA: 129] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 04/12/2019] [Accepted: 04/16/2019] [Indexed: 12/22/2022]
Abstract
Simultaneous detection of multiple tumor biomarkers in body fluids could facilitate early diagnosis of lung cancer, so as to provide scientific reference for clinical treatment. This paper depicted a multi-parameter paper-based electrochemical aptasensor for simultaneous detection of carcinoembryonic antigen (CEA) and neuron-specific enolase (NSE) in a clinical sample with high sensitivity and specificity. The paper-based device was fabricated through wax printing and screen-printing, which enabled functions of sample filtration and sample auto injection. Amino functional graphene (NG)-Thionin (THI)- gold nanoparticles (AuNPs) and Prussian blue (PB)- poly (3,4- ethylenedioxythiophene) (PEDOT)- AuNPs nanocomposites were synthesized respectively. They were used to modify the working electrodes not only for promoting the electron transfer rate, but also for immobilization of the CEA and NSE aptamers. A label-free electrochemical method was adopted, enabling a rapid simple point-of-care testing. Experimental results showed that the proposed multi-parameter aptasensor exhibited good linearity in ranges of 0.01-500 ng mL-1 for CEA (R2 = 0.989) and 0.05-500 ng mL-1 for NSE (R2 = 0.944), respectively. The limit of detection (LOD) was 2 pg mL-1 for CEA and 10 pg mL-1 for NSE. In addition, the device was evaluated using clinical serum samples and received a good correlation with large electrochemical luminescence (ECL) equipment, which would offer a new platform for early cancer diagnostics, especially in those resource-limit areas.
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Affiliation(s)
- Yang Wang
- State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 10090, China
| | - Jinping Luo
- State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 10090, China
| | - Juntao Liu
- State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 10090, China
| | - Shuai Sun
- State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 10090, China
| | - Ying Xiong
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Thoracic Surgery II, Peking University Cancer Hospital & Institute, Beijing, 100142, China
| | - Yuanyuan Ma
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Thoracic Surgery II, Peking University Cancer Hospital & Institute, Beijing, 100142, China
| | - Shi Yan
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Thoracic Surgery II, Peking University Cancer Hospital & Institute, Beijing, 100142, China
| | - Yue Yang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Thoracic Surgery II, Peking University Cancer Hospital & Institute, Beijing, 100142, China
| | - Huabing Yin
- Division of Biomedical Engineering, School of Engineering, University of Glasgow, Oakfield Avenue, Glasgow, G12 8LT, United Kingdom
| | - Xinxia Cai
- State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 10090, China.
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Yu Y, Yin T, Peng Q, Kong L, Li C, Tang D, Yin X. Simultaneous Monitoring of Amyloid-β (Aβ) Oligomers and Fibrils for Effectively Evaluating the Dynamic Process of Aβ Aggregation. ACS Sens 2019; 4:471-478. [PMID: 30693761 DOI: 10.1021/acssensors.8b01493] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Herein, we provide a proof of concept for a novel strategy that targets the assessment of the aggregation of amyloid-β (Aβ) by simultaneously determining its oligomers (Aβo) and fibrils (Aβf) in one analytical system. By fabricating and combining two immunosensors for Aβo and Aβf, respectively, we constructed a two-channel electrochemical system. The ratio of Aβf to Aβo was calculated and taken as a possible criterion for evaluating the extent of aggregation. Thereby, the presence of and transformation between oligomers and fibrils were accurately probed by incubating the Aβ monomer for different times and then calculating the ratios of Aβf to Aβo. The applicability of this method was further validated by tracking the dynamic progress of Aβ aggregation in the cerebrospinal fluid and tissues of Alzheimer's disease (AD) rats, which revealed that the ratio of Aβf to Aβo in rat brain gradually increased with the progression of AD, which was indicative of the severity of peptide aggregation during this process. Overall, this study represents the first example of a quantitative strategy for precisely evaluating the aggregation process that is related to pathological events in AD brain.
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Affiliation(s)
- Yanyan Yu
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, 209 Tongshan Road, Xuzhou 221004, Jiangsu, P. R. China
- Department of Pharmaceutical Analysis, School of Pharmacy, Xuzhou Medical University, 209 Tongshan Road, Xuzhou 221004, Jiangsu, P. R. China
| | - Tianxiao Yin
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, 209 Tongshan Road, Xuzhou 221004, Jiangsu, P. R. China
| | - Qiwen Peng
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, 209 Tongshan Road, Xuzhou 221004, Jiangsu, P. R. China
| | - Lingna Kong
- Department of Chemistry, East China Normal University, 500 Dongchuan Road, Shanghai 200241, P. R. China
| | - Chenglin Li
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, 209 Tongshan Road, Xuzhou 221004, Jiangsu, P. R. China
| | - Daoquan Tang
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, 209 Tongshan Road, Xuzhou 221004, Jiangsu, P. R. China
- Department of Pharmaceutical Analysis, School of Pharmacy, Xuzhou Medical University, 209 Tongshan Road, Xuzhou 221004, Jiangsu, P. R. China
| | - Xiaoxing Yin
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, 209 Tongshan Road, Xuzhou 221004, Jiangsu, P. R. China
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30
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Cui L, Hu J, Li CC, Wang CM, Zhang CY. An electrochemical biosensor based on the enhanced quasi-reversible redox signal of prussian blue generated by self-sacrificial label of iron metal-organic framework. Biosens Bioelectron 2018; 122:168-174. [DOI: 10.1016/j.bios.2018.09.061] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 09/15/2018] [Accepted: 09/17/2018] [Indexed: 11/25/2022]
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Bhattacharjee R, Moriam S, Nguyen NT, Shiddiky MJA. A bisulfite treatment and PCR-free global DNA methylation detection method using electrochemical enzymatic signal engagement. Biosens Bioelectron 2018; 126:102-107. [PMID: 30396016 DOI: 10.1016/j.bios.2018.10.020] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 10/05/2018] [Accepted: 10/10/2018] [Indexed: 02/09/2023]
Abstract
In this paper we report on a bisulfite treatment and PCR amplification-free method for sensitive and selective quantifying of global DNA methylation. Our method utilizes a three-step strategy that involves (i) initial isolation and denaturation of global DNA using the standard isolation protocol and direct adsorption onto a bare gold electrode via gold-DNA affinity interaction, (ii) selective interrogation of methylation sites in adsorbed DNA via methylation-specific 5mC antibody, and (iii) subsequent signal enhancement using an electrochemical-enzymatic redox cycling reaction. In the redox cycling reaction, glucose oxidase (GOx) is used as an enzyme label, glucose as a substrate and ruthenium complex as a redox mediator. We initially investigated the enzymatic properties of GOx by varying glucose and ruthenium concentration to delineate the redox cyclic mechanism of our assay. Because of the fast electron transfer by ruthenium (Ru) complex and intrinsic signal amplification from GOx label, this method could detect as low as 5% methylation level in 50 ng of total DNA input. Moreover, the use of methylation-specific 5mC antibody conjugated GOx makes this assay relatively highly selective for DNA methylation analysis. The data obtained from the electrochemical response for different levels of methylation showed excellent interassay reproducibility of RSD (relative standard deviation) < 5% for n = 3. We believe that this inexpensive, rapid, and sensitive assay will find high relevance as an alternative method for DNA methylation analysis both in research and clinical platforms.
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Affiliation(s)
- Ripon Bhattacharjee
- School of Environment and Science, Griffith University, Nathan Campus, Nathan, QLD 4111, Australia; Queensland Micro, and Nanotechnology Centre (QMNC), Griffith University, Nathan Campus, Nathan, QLD 4111, Australia
| | - Sofia Moriam
- School of Environment and Science, Griffith University, Nathan Campus, Nathan, QLD 4111, Australia; Queensland Micro, and Nanotechnology Centre (QMNC), Griffith University, Nathan Campus, Nathan, QLD 4111, Australia
| | - Nam-Trung Nguyen
- Queensland Micro, and Nanotechnology Centre (QMNC), Griffith University, Nathan Campus, Nathan, QLD 4111, Australia
| | - Muhammad J A Shiddiky
- School of Environment and Science, Griffith University, Nathan Campus, Nathan, QLD 4111, Australia; Queensland Micro, and Nanotechnology Centre (QMNC), Griffith University, Nathan Campus, Nathan, QLD 4111, Australia.
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Cao JT, Wang YL, Zhang JJ, Dong YX, Liu FR, Ren SW, Liu YM. Immuno-Electrochemiluminescent Imaging of a Single Cell Based on Functional Nanoprobes of Heterogeneous Ru(bpy)32+@SiO2/Au Nanoparticles. Anal Chem 2018; 90:10334-10339. [DOI: 10.1021/acs.analchem.8b02141] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Jun-Tao Cao
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, Henan 464000, P.R.China
| | - Yu-Ling Wang
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, Henan 464000, P.R.China
| | - Jing-Jing Zhang
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, Henan 464000, P.R.China
| | - Yu-Xiang Dong
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, Henan 464000, P.R.China
| | - Fu-Rao Liu
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, Henan 464000, P.R.China
| | - Shu-Wei Ren
- Xinyang Central Hospital, Xinyang, Henan 464000, P.R.China
| | - Yan-Ming Liu
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, Henan 464000, P.R.China
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Sensitive and rapid aptasensing of chloramphenicol by colorimetric signal transduction with a DNAzyme-functionalized gold nanoprobe. Food Chem 2018; 270:287-292. [PMID: 30174048 DOI: 10.1016/j.foodchem.2018.07.127] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Revised: 05/13/2018] [Accepted: 07/18/2018] [Indexed: 01/03/2023]
Abstract
By combination of the aptamer biorecognition with the colorimetric signal transduction of a DNAzyme-functionalized nanoprobe, a new biosensing method was developed for the rapid and sensitive detection of chloramphenicol (CAP). The nanoprobe was prepared through the functionalization of gold nanoparticles with the complementary oligonucleotide against aptamer and high-content hemin/G-quadruplex DNAzyme. When one-step incubating the nanoprobe and CAP at a constructed aptamer-magnetic bead (MB) biosensing platform, due to the competitive biorecognition reaction, the nanoprobes related with CAP amounts were quantitative captured onto the MB surface. Based on the catalytic reaction of the peroxidase-mimicking DNAzyme, a colored substance was produced for the colorimetric signal transduction of the method. Due to the great signal amplification of the nanoprobe, a very low detection limit down to 0.13 pg/mL was obtained. Considering the excellent performance of the aptasensing method and satisfactory results for milk sample experiments, it indicates good reliability for practical applications.
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Gong X, Zhang B, Piao J, Zhao Q, Gao W, Peng W, Kang Q, Zhou D, Shu G, Chang J. High sensitive and multiple detection of acute myocardial infarction biomarkers based on a dual-readout immunochromatography test strip. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2018; 14:1257-1266. [DOI: 10.1016/j.nano.2018.02.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 01/19/2018] [Accepted: 02/23/2018] [Indexed: 01/31/2023]
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Wu J, He J, Zhang C, Chen J, Niu Y, Yuan Q, Yu C. PdPt nanoparticles anchored on the N-G with the integration of PANI nanohybrids as novel redox probe and catalyst for the detection of rs1801177. Biosens Bioelectron 2018; 102:403-410. [DOI: 10.1016/j.bios.2017.11.054] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 11/11/2017] [Accepted: 11/17/2017] [Indexed: 01/12/2023]
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36
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Liu F, Ni L, Zhe J. Lab-on-a-chip electrical multiplexing techniques for cellular and molecular biomarker detection. BIOMICROFLUIDICS 2018; 12:021501. [PMID: 29682143 PMCID: PMC5893332 DOI: 10.1063/1.5022168] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 03/28/2018] [Indexed: 06/08/2023]
Abstract
Signal multiplexing is vital to develop lab-on-a-chip devices that can detect and quantify multiple cellular and molecular biomarkers with high throughput, short analysis time, and low cost. Electrical detection of biomarkers has been widely used in lab-on-a-chip devices because it requires less external equipment and simple signal processing and provides higher scalability. Various electrical multiplexing for lab-on-a-chip devices have been developed for comprehensive, high throughput, and rapid analysis of biomarkers. In this paper, we first briefly introduce the widely used electrochemical and electrical impedance sensing methods. Next, we focus on reviewing various electrical multiplexing techniques that had achieved certain successes on rapid cellular and molecular biomarker detection, including direct methods (spatial and time multiplexing), and emerging technologies (frequency, codes, particle-based multiplexing). Lastly, the future opportunities and challenges on electrical multiplexing techniques are also discussed.
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Affiliation(s)
- Fan Liu
- Department of Mechanical Engineering, University of Akron, Akron, Ohio 44325, USA
| | - Liwei Ni
- Department of Mechanical Engineering, University of Akron, Akron, Ohio 44325, USA
| | - Jiang Zhe
- Department of Mechanical Engineering, University of Akron, Akron, Ohio 44325, USA
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Qin X, Sui Y, Xu A, Liu L, Li Y, Tan Y, Chen C, Xie Q. Ultrasensitive immunoassay of proteins based on in-situ enzymatic formation of quantum dots and microliter-droplet anodic stripping voltammetry. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.01.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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38
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Akanda MR, Ju H. An Integrated Redox Cycling for Electrochemical Enzymatic Signal Enhancement. Anal Chem 2017; 89:13480-13486. [PMID: 29164851 DOI: 10.1021/acs.analchem.7b03802] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Highly sensitive analytical methods for the detection of proteins are still an urgent demand in early medical diagnosis and the discovery of biomarkers with ultralow abundance. Here an integrated electrochemical-chemical-enzymatic redox cycling is designed for significant enhancement of electrochemical enzymatic signal in biorecognition. This strategy efficiently utilizes the high specificity of the outersphere to innersphere redox reaction to mediate the enzymatic redox cycling with the nonenzymatic redox cycling. The oxygenation activity of tyrosinase as a label of the biorecognition event ensures low background and generates outersphere-reaction-philic/innersphere-reaction-philic redox couples, which leads to 13 300× amplification of electrochemical signal. The mediation of nonenzymatic redox cycling in the integrated system produces a 14-fold improved ratio of signal to background. The practicality of the proposed approach with clinical samples demonstrates its potential in clinical diagnostic and therapeutic monitoring. This work opens a new avenue to design novel signal amplification strategies for ultrasensitive bioanalysis.
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Affiliation(s)
- Md Rajibul Akanda
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210023, P. R. China
| | - Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210023, P. R. China
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Bodulev OL, Gribas AV, Sakharov IY. Microplate chemiluminescent assay for HBV DNA detection using 3-(10'-phenothiazinyl)propionic acid/N-morpholinopyridine pair as enhancer of HRP-catalyzed chemiluminescence. Anal Biochem 2017; 543:33-36. [PMID: 29203136 DOI: 10.1016/j.ab.2017.11.026] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2017] [Revised: 11/29/2017] [Accepted: 11/30/2017] [Indexed: 01/15/2023]
Abstract
A sensitive sandwich assay for hepatitis B virus (HBV) DNA detection based on use of commercial CL-ELISA microplates was developed. To reveal the target the covalent conjugate of reporter oligonucleotide and horseradish peroxidase (HRP) was synthesized. An employment of enhanced chemiluminescence reaction, where 3-(10'-phenothiazinyl)propionic acid/N-morpholinopyridine pair was used as enhancer of HRP-catalyzed chemiluminescence, permitted to measure the enzyme activity of the conjugate with high sensitivity. Under the favorable conditions the limit of detection and a linear range of the assay were 3 pM and 0.07-2.0 nM, respectively. The coefficient of variation (CV) for determination of HBV DNA concentrations within the working range was lower than 4%. The obtained results demonstrated that the developed assay had high sensitivity and precision.
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Affiliation(s)
- Oleg L Bodulev
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory, Moscow 119991, Russia
| | - Anastasia V Gribas
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory, Moscow 119991, Russia
| | - Ivan Yu Sakharov
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory, Moscow 119991, Russia.
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Khashayar P, Amoabediny G, Larijani B, Hosseini M, Vanfleteren J. Fabrication and Verification of Conjugated AuNP-Antibody Nanoprobe for Sensitivity Improvement in Electrochemical Biosensors. Sci Rep 2017; 7:16070. [PMID: 29167431 PMCID: PMC5700097 DOI: 10.1038/s41598-017-12677-w] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 09/18/2017] [Indexed: 11/21/2022] Open
Abstract
This study was designed to obtain covalently coupled conjugates as means for achieving higher stability and better coverage of the AuNPs by antibodies on the particle surface suitable for sensor performance enhancement. Starting by using a modified protocol, colloid gold solution, with mean AuNP core size of ~6 nm was synthesized. The protocol used for conjugation of AuNPs to osteocalcin antibody in this study relies on covalent and electrostatic attractions between constituents. Varieties of conjugates with varying combinations of crosslinkers and different concentrations were successfully synthesized. The obtained products were characterized and their properties were studied to determine the best candidate in sense of antibody - antigen reactivity. Using AuNP-GSH-NHS-Ab combination (1:1:1), the tertiary structure of the protein was maintained and thus the antibody remained functional in the future steps. This one-pot method provided a simple method for covalently coupling antibodies on the particle surface while keeping their functionality intact. The AuNP content of the solution also accelerated electron transfer rate and thus amplifies the detection signal. With the developed and discussed technique herein, a simple solution is modeled to be used for measuring serum levels of biomarkers in single and/or multiplexed sensor systems.
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Affiliation(s)
- Patricia Khashayar
- Nanobiotechnalogy Department, Faculty of New Sciences & Technologies, University of Tehran, Tehran, Iran
- Center for Microsystems Technology, imec and Ghent University, Gent-Zwijnaarde, Belgium
- Osteoporosis Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Ghassem Amoabediny
- Department of Biotechnology, Faculty of Chemical Engineering, School of Engineering, University of Tehran, Tehran, Iran.
- Nanobiotechnology Department, Research Center for New Technology in Life Sciences Engineering, University of Tehran, Tehran, Iran.
| | - Bagher Larijani
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Morteza Hosseini
- Nanobiotechnalogy Department, Faculty of New Sciences & Technologies, University of Tehran, Tehran, Iran
| | - Jan Vanfleteren
- Center for Microsystems Technology, imec and Ghent University, Gent-Zwijnaarde, Belgium.
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One-pot loading high-content thionine on polydopamine-functionalized mesoporous silica nanosphere for ultrasensitive electrochemical immunoassay. Biosens Bioelectron 2017; 95:15-20. [DOI: 10.1016/j.bios.2017.04.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 03/30/2017] [Accepted: 04/10/2017] [Indexed: 12/15/2022]
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42
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Li D, Cui Y, Morisseau C, Gee SJ, Bever CS, Liu X, Wu J, Hammock BD, Ying Y. Nanobody Based Immunoassay for Human Soluble Epoxide Hydrolase Detection Using Polymeric Horseradish Peroxidase (PolyHRP) for Signal Enhancement: The Rediscovery of PolyHRP? Anal Chem 2017; 89:6248-6256. [PMID: 28460522 PMCID: PMC5611449 DOI: 10.1021/acs.analchem.7b01247] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Soluble epoxide hydrolase (sEH) is a potential pharmacological target for treating hypertension, vascular inflammation, cancer, pain, and multiple cardiovascular related diseases. A variable domain of the heavy chain antibody (termed single domain antibody (sdAb), nanobody, or VHH) possesses the advantages of small size, high stability, ease of genetic manipulation, and ability for continuous manufacture, making such nanobody a superior choice as an immunoreagent. In this work, we developed an ultrasensitive nanobody based immunoassay for human sEH detection using polymeric horseradish peroxidase (PolyHRP) for signal enhancement. Llama nanobodies against human sEH were used as the detection antibody in sandwich enzyme linked immunosorbent assays (ELISA) with polyclonal anti-sEH as the capture antibody. A conventional sandwich ELISA using a horseradish peroxidase (HRP) labeled anti-hemeagglutinin (HA) tag as the tracer showed a marginal sensitivity (0.0015 optical density (OD)·mL/ng) and limit of detection (LOD) of 3.02 ng/mL. However, the introduction of the PolyHRP as the tracer demonstrated a 141-fold increase in the sensitivity (0.21 OD·mL/ng) and 57-fold decrease in LOD (0.05 ng/mL). Systematic comparison of three different tracers in four ELISA formats demonstrated the overwhelming advantage of PolyHRP as a label for nanobody based immunoassay. This enhanced sEH immunoassay was further evaluated in terms of selectivity against other epoxide hydrolases and detection of the target protein in human tissue homogenate samples. Comparison with an enzyme activity based assay and a Western blot for sEH detection reveals good correlation with the immunoassay. This work demonstrates increased competiveness of nanobodies for practical sEH protein detection utilizing PolyHRP. It is worthwhile to rediscover the promising potential of PolyHRP in nanobody and other affinity based methods after its low-profile existence for decades.
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Affiliation(s)
- Dongyang Li
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California, Davis, California 95616, United States
| | - Yongliang Cui
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California, Davis, California 95616, United States
- Faculty of Agricultural and Food Science, Zhejiang A & F University, Hangzhou, Zhejiang 311300, China
| | - Christophe Morisseau
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California, Davis, California 95616, United States
| | - Shirley J. Gee
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California, Davis, California 95616, United States
| | - Candace S. Bever
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California, Davis, California 95616, United States
| | - Xiangjiang Liu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
| | - Jian Wu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
| | - Bruce D. Hammock
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California, Davis, California 95616, United States
| | - Yibin Ying
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
- Faculty of Agricultural and Food Science, Zhejiang A & F University, Hangzhou, Zhejiang 311300, China
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43
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Ran B, Xianyu Y, Dong M, Chen Y, Qian Z, Jiang X. Bioorthogonal Reaction-Mediated ELISA Using Peroxide Test Strip as Signal Readout for Point-of-Care Testing. Anal Chem 2017; 89:6113-6119. [PMID: 28460169 DOI: 10.1021/acs.analchem.7b00831] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
This work demonstrates a highly sensitive peroxide test strip (PTS)-based enzyme-linked immunosorbent assay (ELISA) for both qualitative and quantitative detection of drugs of abuse (morphine) and disease biomarkers (interleukin-6 and HIV-1 capsid antigen p24). This color-based PTS is a commercially available product with advantages of low cost, easy operation, and portability, and it is an ideal signal readout strategy in ELISA to simplify the immunoassay procedures and enable point-of-care testing (POCT). In addition, we introduce the bioorthogonal reaction that can effectively amplify the signal by controlling the cycles of bioorthogonal reaction to achieve the desirable sensitivity depending on different analytes. The limit of detection is 0.2 ng/mL for morphine, 3.98 pg/mL for interleukin-6, and 11.6 pg/mL for detection of HIV-capsid antigen (p24). This PTS-ELISA applies to both the qualitative and quantitative detection of IL-6 and p24 in clinical serum samples with good accuracy, which provides a promising tool for the POCT in clinical diagnosis.
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Affiliation(s)
- Bei Ran
- State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University , Chengdu, 610041, People's Republic of China.,CAS Key Lab for Biological Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, China
| | - Yunlei Xianyu
- CAS Key Lab for Biological Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, China
| | - Mingling Dong
- State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University , Chengdu, 610041, People's Republic of China.,CAS Key Lab for Biological Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, China
| | - Yiping Chen
- CAS Key Lab for Biological Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, China
| | - Zhiyong Qian
- State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University , Chengdu, 610041, People's Republic of China
| | - Xingyu Jiang
- CAS Key Lab for Biological Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, China.,The University of Chinese Academy of Sciences , 19 A Yuquan Road, Shijingshan District, Beijing, 100049, People's Republic of China
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44
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Jia X, Song T, Liu Y, Meng L, Mao X. An immunochromatographic assay for carcinoembryonic antigen on cotton thread using a composite of carbon nanotubes and gold nanoparticles as reporters. Anal Chim Acta 2017; 969:57-62. [PMID: 28411630 DOI: 10.1016/j.aca.2017.02.040] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 02/24/2017] [Accepted: 02/27/2017] [Indexed: 01/16/2023]
Abstract
This paper describes a low-cost, sensitive, visual and rapid immunochromatographic assay method on cotton thread for carcinoembryonic antigen (CEA) detection by using novel carbon nanotube/gold nanoparticles (CNT/GNPs) nanocomposite reporter probe. CEA, a lung cancer protein biomarker, was used as analyte to demonstrate the principle of the immunochromatographic assay on cotton thread biosensor. In the presence of target CEA, the decreasing aggregation amount of CNT/GNPs nanocomposite reporter probes on the test zone induced directly readout by naked eye. Meanwhile, quantitative detection could be performed conveniently with a commercial available scanner. The performance with respect to sensitivity of the method was greatly improved by 2-3 magnitudes comparing with traditional gold nanoparticles (GNPs) or carbon nanotubes (CNTs) as reporter probe. Under optimal conditions, the biosensor was capable of detecting 2.32 ng/mL CEA (S/N ≥ 3) which is sensitive enough for clinical diagnosis. These results indicated the novel CNT/GNPs nanocomposite reporter probe based immunochromatographic assay on cotton thread is particularly suitable for point-of-care (POC) diagnostics in resource-limited regions.
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Affiliation(s)
- Xiaobo Jia
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi Province 710127, PR China
| | - Tingting Song
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi Province 710127, PR China
| | - Yan Liu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi Province 710127, PR China
| | - Lili Meng
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi Province 710127, PR China
| | - Xun Mao
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi Province 710127, PR China.
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45
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Mills DM, Calvo-Marzal P, Pinzon JM, Armas S, Kolpashchikov DM, Chumbimuni-Torres KY. A Single Electrochemical Probe Used for Analysis of Multiple Nucleic Acid Sequences. ELECTROANAL 2017; 29:873-879. [PMID: 29371782 PMCID: PMC5777621 DOI: 10.1002/elan.201600548] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Accepted: 10/27/2016] [Indexed: 01/28/2023]
Abstract
Electrochemical hybridization sensors have been explored extensively for analysis of specific nucleic acids. However, commercialization of the platform is hindered by the need for attachment of separate oligonucleotide probes complementary to a RNA or DNA target to an electrode's surface. Here we demonstrate that a single probe can be used to analyze several nucleic acid targets with high selectivity and low cost. The universal electrochemical four-way junction (4J)-forming (UE4J) sensor consists of a universal DNA stem-loop (USL) probe attached to the electrode's surface and two adaptor strands (m and f) which hybridize to the USL probe and the analyte to form a 4J associate. The m adaptor strand was conjugated with a methylene blue redox marker for signal ON sensing and monitored using square wave voltammetry. We demonstrated that a single sensor can be used for detection of several different DNA/RNA sequences and can be regenerated in 30 seconds by a simple water rinse. The UE4J sensor enables a high selectivity by recognition of a single base substitution, even at room temperature. The UE4J sensor opens a venue for a re-useable universal platform that can be adopted at low cost for the analysis of DNA or RNA targets.
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Affiliation(s)
- Dawn M. Mills
- Department of Chemistry, University of Central Florida, 4000 Central Florida Blvd., Orlando, FL 32816, United States
| | - Percy Calvo-Marzal
- Department of Chemistry, University of Central Florida, 4000 Central Florida Blvd., Orlando, FL 32816, United States
| | - Jeffer M. Pinzon
- Department of Chemistry, University of Central Florida, 4000 Central Florida Blvd., Orlando, FL 32816, United States
| | - Stephanie Armas
- Department of Chemistry, University of Central Florida, 4000 Central Florida Blvd., Orlando, FL 32816, United States
| | - Dmitry M. Kolpashchikov
- Department of Chemistry, University of Central Florida, 4000 Central Florida Blvd., Orlando, FL 32816, United States
- National Center for Forensic Science, University of Central Florida, Orlando, FL 32816, United States
- Burnett School of Biomedical Science, University of Central Florida, Orlando, FL 32816, United States
| | - Karin Y. Chumbimuni-Torres
- Department of Chemistry, University of Central Florida, 4000 Central Florida Blvd., Orlando, FL 32816, United States
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47
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Guo J, Wang J, Zhang J, Zhang W, Zhang Y. Ultrasensitive non enzymatic multiple immunosensor for tumor markers detection by coupling DNA hybridization chain reaction with intercalated molecules. Biosens Bioelectron 2016; 90:159-165. [PMID: 27888684 DOI: 10.1016/j.bios.2016.11.048] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 09/13/2016] [Accepted: 11/20/2016] [Indexed: 10/20/2022]
Abstract
In this study, we tried coupling the small signal molecules that could intercalate into DNA double helix with hybridization chain reaction (HCR) technique to fabricate a multiple immunosensor. Doxorubicin hydrochloride (DXH) and methylene blue (MB) were used as signal molecules and alpha-fetoprotein (AFP) and carcinoembryonic antigen (CEA) were selected as model biomarkers. The immunosensor mainly consists of three parts as follows: First, two different primary antibodies (Ab1) immobilized on the surface of gold nanoparticles (Au NPs); Second, secondary antibodies (Ab2) conjugated with DNA primer; Third, long DNA concatemers from HCR were used as a carrier to intercalate amounts of signal molecules (DXH or MB). A sandwich immunocomplex was formed among primary antibodies, target biomarkers and secondary antibodies conjugated with DNA primer via specific recognition reaction. Afterwards, DNA concatemers intercalating amounts of DXH or MB were linked to DNA primer via DNA hybridization. Square wave voltammetry (SWV) was employed to record the response signals from electroactive molecules DXH and MB, and two distinguishable signals were obtained, which peak potentials were at about -0.30V (corresponding to MB) and -0.70V (corresponding to DXH, both vs SCE), respectively. The signal intensities of MB and DXH were linearly related to the logarithm of biomarkers concentration in the range of 0.05pgmL-1-25ngmL-1, and the limit of detection were 0.03pgmL-1 for CEA and 0.02pgmL-1 for AFP (at S/N=3), respectively. Furthermore, the immunosensor exhibited a sensitive electrochemical response to biomarkers in human serum samples and the results obtained were in accordance with reference method, indicating the immunosensor can be applied to real sample analysis in clinic diagnosis.
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Affiliation(s)
- Jinjin Guo
- College of Chemistry and Materials Science, the Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chem-Biosensing, Anhui Normal University, Wuhu 241000, People's Republic of China
| | - Junchun Wang
- College of Chemistry and Materials Science, the Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chem-Biosensing, Anhui Normal University, Wuhu 241000, People's Republic of China
| | - Junjun Zhang
- College of Chemistry and Materials Science, the Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chem-Biosensing, Anhui Normal University, Wuhu 241000, People's Republic of China
| | - Wenjuan Zhang
- College of Chemistry and Materials Science, the Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chem-Biosensing, Anhui Normal University, Wuhu 241000, People's Republic of China
| | - Yuzhong Zhang
- College of Chemistry and Materials Science, the Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chem-Biosensing, Anhui Normal University, Wuhu 241000, People's Republic of China.
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48
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Munge BS, Stracensky T, Gamez K, DiBiase D, Rusling JF. Multiplex Immunosensor Arrays for Electrochemical Detection of Cancer Biomarker Proteins. ELECTROANAL 2016; 28:2644-2658. [PMID: 28592919 PMCID: PMC5459496 DOI: 10.1002/elan.201600183] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 05/03/2016] [Indexed: 01/22/2023]
Abstract
Measuring panels of protein biomarkers offer a new personalized approach to early cancer detection, disease monitoring and patients' response to therapy. Multiplex electrochemical methods are uniquely positioned to provide faster, more sensitive, point of care (POC) devices to detect protein biomarkers for clinical diagnosis. Nanomaterials-based electrochemical methods offer sensitivity needed for early cancer detection. This review discusses recent advances in multiplex electrochemical immunosensors for cancer diagnostics and disease monitoring. Different electrochemical strategies including enzyme-based immunoarrays, nanoparticle-based immunoarrays and electrochemiluminescence methods are discussed. Many of these methods have been integrated into microfluidic systems, but measurement of more than 2-4 protein markers in a small single serum sample is still a challenge. For POC applications, a simple, low cost method is required. Major challenges in multiplexed microfluidic immunoassays are reagent additions and washing steps that require creative engineering solutions. 3-D printed microfluidics and paper-based microfluidic devices are also explored.
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Affiliation(s)
- Bernard S Munge
- Department of Chemistry, Salve Regina University, 100 Ochre Point Avenue, Newport RI 02840, USA
| | - Thomas Stracensky
- Department of Chemistry, Salve Regina University, 100 Ochre Point Avenue, Newport RI 02840, USA
| | - Kathleen Gamez
- Department of Chemistry, Salve Regina University, 100 Ochre Point Avenue, Newport RI 02840, USA
| | - Dimitri DiBiase
- Department of Chemistry, Salve Regina University, 100 Ochre Point Avenue, Newport RI 02840, USA
| | - James F Rusling
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269-3136, USA
- Department of Surgery and Neag Cancer Center, University of Connecticut Health Center, Farmington, Connecticut 06030, USA
- School of Chemistry, National University of Ireland at Galway, Galway, Ireland
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49
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Ying JLZ, Lim LH, Mirza AH, Ahmad N, Rahman IA, Ahmed MU. Bionanotechnology-Based Colorimetric Sensors for Food Analysis. FOOD BIOSENSORS 2016:104-130. [DOI: 10.1039/9781782623908-00104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Colorimetric biosensing is widely used in clinical diagnosis and environmental evaluation due to its simplicity and practicality. It has also recently become popular in food analysis. Nanotechnology is being integrated into the development of colorimetric biosensors to overcome the bottleneck of conventional colorimetric biosensing approaches. Innovative bionanotechnology-based colorimetric sensors have recently been developed. This chapter focuses on the progress of bionanotechnology-based colorimetric biosensors in food safety assessment. We also describe how nanomaterials can be integrated and tailored to meet the requirements of colorimetric biosensing systems for the detection of heavy metal cations, antibiotics, nucleic acids, and toxins/toxicants. Approaches described include functionalization of nanomaterials to act as colorimetric probes, carriers and enzyme mimetics. Selected examples of the most recent preliminary applications of bionanotechnology-based colorimetric biosensors in food safety assessment are given to illustrate the novel concepts and promising future applications. Future prospects for the application of bionanotechnology-based colorimetric biosensors in food safety assessment are also briefly discussed.
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Affiliation(s)
- Jean Liew Zhi Ying
- Biosensors and Biotechnology Laboratory, Chemical Science Programme, Faculty of Science, Universiti Brunei Darussalam Jalan Tungku Link Gadong BE 1410 Brunei Darussalam
| | - Lee Hoon Lim
- Biosensors and Biotechnology Laboratory, Chemical Science Programme, Faculty of Science, Universiti Brunei Darussalam Jalan Tungku Link Gadong BE 1410 Brunei Darussalam
| | - Aminul Huq Mirza
- Biosensors and Biotechnology Laboratory, Chemical Science Programme, Faculty of Science, Universiti Brunei Darussalam Jalan Tungku Link Gadong BE 1410 Brunei Darussalam
| | - Norhayati Ahmad
- Environmental and Life Sciences Programme, Faculty of Science, Universiti Brunei Darussalam Jalan Tungku Link Gadong BE 1410 Brunei Darussalam
| | - Ibrahim Abd Rahman
- Biosensors and Biotechnology Laboratory, Chemical Science Programme, Faculty of Science, Universiti Brunei Darussalam Jalan Tungku Link Gadong BE 1410 Brunei Darussalam
| | - Minhaz Uddin Ahmed
- Biosensors and Biotechnology Laboratory, Chemical Science Programme, Faculty of Science, Universiti Brunei Darussalam Jalan Tungku Link Gadong BE 1410 Brunei Darussalam
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50
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Akanda MR, Ju H. A Tyrosinase-Responsive Nonenzymatic Redox Cycling for Amplified Electrochemical Immunosensing of Protein. Anal Chem 2016; 88:9856-9861. [DOI: 10.1021/acs.analchem.6b03056] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Md. Rajibul Akanda
- State Key Laboratory of Analytical
Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
| | - Huangxian Ju
- State Key Laboratory of Analytical
Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
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