1
|
Abbasi R, Wachsmann-Hogiu S. Optimization and miniaturization of SE-ECL for potential-resolved, multi-color, multi-analyte detection. Biosens Bioelectron 2024; 257:116322. [PMID: 38678789 DOI: 10.1016/j.bios.2024.116322] [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: 11/25/2023] [Revised: 04/16/2024] [Accepted: 04/20/2024] [Indexed: 05/01/2024]
Abstract
Electrochemiluminescence (ECL) is a bioanalytical technique with numerous advantages, including the potential for high temporal and spatial resolution, a high signal-to-noise ratio, a broad dynamic range, and rapid measurement capabilities. To reduce the complexity of a multi-electrode approach, we use a single-electrode electrochemiluminescence (SE-ECL) configuration to achieve the simultaneous emission and detection of multiple colors for applications that require multiplexed detection of several analytes. This method exploits intrinsic differences in the electric potential applied along single electrodes built into electrochemical cells, enabling the achievement of distinct colors through selective excitation of ECL luminophores. We present results on the optimization of SE-ECL intensity for different channel lengths and widths, with sum intensities being 5 times larger for 6 cm vs. 2 cm channels and linearly increasing with the width of the channels. Furthermore, we demonstrated for the first time that applying Alternating Current (AC) voltage within the single electrode setup for driving the ECL reactions has a dramatic effect on the emitted light intensity, with square waveforms resulting in higher intensities vs sine waveforms. Additionally, multiplexed multicolor SE-ECL on a 6.5 mm × 3.6 mm CMOS semiconductor image sensor was demonstrated for the first time, with the ability to simultaneously distinguish four different colors, leading to the ability to measure multiple analytes.
Collapse
Affiliation(s)
- Reza Abbasi
- Department of Bioengineering, McGill University, Montreal, Canada
| | | |
Collapse
|
2
|
He Y, Yang G, Zhao J, Tan K, Yuan R, Chen S. Potentially tunable ratiometric electrochemiluminescence sensing based on conjugated polymer nanoparticle for organophosphorus pesticides detection. JOURNAL OF HAZARDOUS MATERIALS 2022; 432:128699. [PMID: 35325864 DOI: 10.1016/j.jhazmat.2022.128699] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 03/02/2022] [Accepted: 03/11/2022] [Indexed: 06/14/2023]
Abstract
In general, suitable double luminophores and their coreactants are necessary for constructing electrochemiluminescence (ECL) ratio strategy. However, the complexity of matching double luminophores and the stability and repeatability problem suffered by introducing exogenous coreactant would greatly limit the application of ratio detection. An original single-luminophore-based ECL ratio sensing was developed excluding any exogenous coreactants in this work. The poly [9,9-bis(3'-(N,N-dimethylamino)propyl)- 2,7-fluorene]-alt-2,7-(9,9-dioctylfluorene)] nanoparticles (PFN NPs) were explored to emit two anodic ECL signals. One centered at + 1.25 V (ECL-1) with the scanning potential of 0 ~ + 1.25 V and the other at + 1.95 V (ECL-2) with the scanning potential of 0 ~ + 1.95 V. ECL-1 showed a very strong emission without any exogenous coreactant. Importantly, hydrogen peroxide (H2O2) was able to efficiently weaken ECL-1 but strengthen ECL-2. When organophosphorus pesticides (OPs) were absent, the immobilized acetylcholinesterase-choline oxidase (AChE-ChOx) would catalyze the substrate acetylthiocholine chloride (ATCl) to produce H2O2, resulting in a quenched ECL-1 and an enhanced ECL-2. With the introduction of OPs, ECL-1 increased while ECL-2 accordingly decreased as OPs prohibited production of H2O2 by inhibiting activity of AChE. Highly sensitive ECL ratio detection for OPs was realized based on the change of the ratio of two signals. The dual anode emission properties of PFN NPs coupled with the opposite regulation of H2O2 on the two signals paved a new avenue for potentially tunable ECL ratio sensing strategy, and showed enormous potential applications for OPs analysis.
Collapse
Affiliation(s)
- Ying He
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Guomin Yang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Jinwen Zhao
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Kejun Tan
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
| | - Ruo Yuan
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Shihong Chen
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
| |
Collapse
|
3
|
Toppo AL, Jujjavarapu SE. New insights for integration of nano particle with microfluidic systems for sensor applications. Biomed Microdevices 2022; 24:13. [PMID: 35171352 DOI: 10.1007/s10544-021-00598-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/10/2021] [Indexed: 11/29/2022]
Abstract
A biosensor is a compact device, which utilizes biological derived recognition component, immobilized on a transducer to analyze an analyte. Nanoparticles with their unique chemical and physical properties are versatile in their applications to develop as sensors. Different nanoparticles play different roles in the sensing systems like metal and metal oxide nanoparticles. The application of Gold, Silver and Copper nanoparticles will be discussed in brief. The nanoparticles typically function as substrates for immobilization of biomolecules, as catalytic agent, electron transfer agent between electrode surface and the biomolecules, and as reactants. Microfluidic deals with manipulating very small volumes of fluids (micro and nanoliters). This miniaturized platform enhances control of flow conditions and mixing rate of fluids. The microfluidics improves the sensitivity of the analysis, and reduces the volumes of sample and reagent in the analysis. The review specifically aims at representing microfluidics-based sensors and nanoparticle based sensors. This review will also focus on probable merger of these two fields to take advantage of both the fields and this will help in pushing the boundaries of these fields further more.
Collapse
Affiliation(s)
- A L Toppo
- Deparment of Biotechnology, National Institute of Technology Raipur, Raipur, India
| | - S E Jujjavarapu
- Deparment of Biotechnology, National Institute of Technology Raipur, Raipur, India.
| |
Collapse
|
4
|
A novel label-free solid-state electrochemiluminescence sensor based on the resonance energy transfer from Ru(bpy) 32+ to GO for DNA hybridization detection. Talanta 2020; 218:121126. [PMID: 32797883 DOI: 10.1016/j.talanta.2020.121126] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/30/2020] [Accepted: 05/04/2020] [Indexed: 11/23/2022]
Abstract
Based on electrochemiluminescence resonance energy transfer (ERET) from Ru(bpy)32+ to graphene oxide (GO), a novel label-free solid-state ECL sensor for sensitive detection of DNA was proposed. First, Ru(bpy)32+/AuNPs was successfully prepared by using a simple and green method and characterized by transmission electron microscopy (TEM), Energy Dispersive X-ray (EDX), and UV-vis spectroscopy. Then, the Ru(bpy)32+/AuNPs colloid was assembled on the gold electrode surface for solid-state ECL film which also later could be used to immobilize thiol-derivatized, single-stranded DNA (HS-ssDNA) via Au-S interactions. The stepwise modification procedure was characterized by cyclic voltammetry(CV), electrochemical impedance spectroscopy (EIS), probe approach curves (PAC) and ECL, respectively. The resulting modified electrode was tested as ECL biosensor for DNA detection. Upon addition of GO, the strong noncovalent interaction between HS-ssDNA and GO led to ECL quenching because of ERET. When in the presence of target ssDNA (t-ssDNA), the distance between the HS-ssDNA and GO increased, which significantly hindered the ERET and, thus, resulted in the restoration of ECL. The ECL intensity of the biosensor increased linearly with t-ssDNA concentration in the range of 50-1000pM, and the detection limit is 20pM. To the best of our knowledge, this is the first application of solid-state ERET from Ru(bpy)32+ to GO and opens new opportunities for sensitive detection of biorecognition events.
Collapse
|
5
|
Zhang H, Luo F, Wang P, Guo L, Qiu B, Lin Z. Signal-on electrochemiluminescence aptasensor for bisphenol A based on hybridization chain reaction and electrically heated electrode. Biosens Bioelectron 2019; 129:36-41. [PMID: 30682687 DOI: 10.1016/j.bios.2019.01.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 01/07/2019] [Accepted: 01/07/2019] [Indexed: 01/25/2023]
Abstract
A simple and sensitive electrochemiluminescence (ECL) aptasensor has been developed for bisphenol A (BPA) detection. The capture DNA (CDNA) was modified on the heated indium-tin-oxide (ITO) working electrode surface firstly and then hybridized with BPA aptamer to form double strand DNA (dsDNA). The presence of target can cause the releasing of aptamer from the electrode surface since the aptamer prefers to switch its configuration to combine with BPA. Subsequently, the free CDNA will induce hybridization chain reaction (HCR) to produce long dsDNA on the electrode surface. Ru(phen)32+ can integrate into the grooves of dsDNA to act as an ECL reagent, thus enhanced ECL signal can be detected. The temperature control during the processes of target recognition and HCR were realized through the heated electrode instead of the bulk solution heating. Furthermore, the performance of the ECL aptasensor can be further enhanced at elevated electrode temperature. Under the optimized conditions, the ECL intensity of the system has a linear relationship with the logarithm of BPA concentration in the range of 2.0 pM-50 nM. The limit of detection (LOD) at 55 °C (electrode surface temperature) was calculated to be 1.5 pM, which was approximately 6.5-fold lower than that at 25 °C. The proposed biosensor has been applied to detect the BPA in drink samples with satisfactory results.
Collapse
Affiliation(s)
- Huifang Zhang
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Institute of Nanomedicine and Nanobiosensing, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China; School of Chemistry and Chemical Engineering, Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou, 341000, P.R. China
| | - Fang Luo
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Institute of Nanomedicine and Nanobiosensing, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Peilong Wang
- Key Laboratory of Agrifood Safety and Quality, Ministry of Agriculture, Institute of Quality Standards & Testing Technology for Agriculture Products, China Agricultural Academy of Science, Beijing 100081, P.R. China.
| | - Longhua Guo
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Institute of Nanomedicine and Nanobiosensing, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Bin Qiu
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Institute of Nanomedicine and Nanobiosensing, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Zhenyu Lin
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Institute of Nanomedicine and Nanobiosensing, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China.
| |
Collapse
|
6
|
Han TT, Dong H, Ren LL, Bao N, Wu W, Ding SN. Self-electrochemiluminescence of CdTe nanocrystals capped with 2-diethylaminoethanethiol. Chem Commun (Camb) 2017; 53:5388-5391. [PMID: 28462967 DOI: 10.1039/c7cc01955f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The self-electrochemiluminescence of CdTe nanocrystals capped with 2-diethylaminoethanethiol was achieved via protective reagent exchange.
Collapse
Affiliation(s)
- Ting-Ting Han
- Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing 211189
- China
| | - Hao Dong
- Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing 211189
- China
| | - Lu-Lu Ren
- Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing 211189
- China
| | - Ning Bao
- School of Public Health
- Nantong University
- 226019 Nantong
- China
| | - Wenzhuo Wu
- School of Industrial Engineering
- Purdue University
- West Lafayette
- USA
| | - Shou-Nian Ding
- Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing 211189
- China
| |
Collapse
|
7
|
Lin J, Wu H, Lu L, Sun Z, Zhang Y, Dang F, Qian L. Porous graphene containing immobilized Ru(II) tris-bipyridyl for use in electrochemiluminescence sensing of tripropylamine. Mikrochim Acta 2016. [DOI: 10.1007/s00604-016-1756-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
8
|
Dong YP, Gao TT, Zhou Y, Jiang LP, Zhu JJ. Anodic Electrogenerated Chemiluminescence of Ru(bpy)3(2+) with CdSe Quantum Dots as Coreactant and Its Application in Quantitative Detection of DNA. Sci Rep 2015; 5:15392. [PMID: 26472243 PMCID: PMC4607998 DOI: 10.1038/srep15392] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2015] [Accepted: 09/14/2015] [Indexed: 12/27/2022] Open
Abstract
In the present paper, we report that CdSe quantum dots (QDs) can act as the coreactant of Ru(bpy)32+ electrogenerated chemiluminescence (ECL) in neutral condition. Strong anodic ECL signal was observed at ~1.10 V at CdSe QDs modified glassy carbon electrode (CdSe/GCE), which might be mainly attributed to the apparent electrocatalytic effect of QDs on the oxidation of Ru(bpy)32+. Ru(bpy)32+ can be intercalated into the loop of hairpin DNA through the electrostatic interaction to fabricate a probe. When the probe was bound to the CdSe QDs modified on the GCE, the intense ECL signal was obtained. The more Ru(bpy)32+ can be intercalated when DNA loop has larger diameter and the stronger ECL signal can be observed. The loop of hairpin DNA can be opened in the presence of target DNA to release the immobilized Ru(bpy)32+, which can result in the decrease of ECL signal. The decreased ECL signal varied linearly with the concentration of target DNA, which showed the ECL biosensor can be used in the sensitive detection of DNA. The proposed ECL biosensor showed an excellent performance with high specificity, wide linear range and low detection limit.
Collapse
Affiliation(s)
- Yong-Ping Dong
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Chemistry for Life Sciences, Nanjing University, Nanjing 210093, China.,School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan 243002, China
| | - Ting-Ting Gao
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Chemistry for Life Sciences, Nanjing University, Nanjing 210093, China.,School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan 243002, China
| | - Ying Zhou
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Chemistry for Life Sciences, Nanjing University, Nanjing 210093, China.,School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan 243002, China
| | - Li-Ping Jiang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Chemistry for Life Sciences, Nanjing University, Nanjing 210093, China
| | - Jun-Jie Zhu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Chemistry for Life Sciences, Nanjing University, Nanjing 210093, China
| |
Collapse
|
9
|
Electrochemistry and electrochemiluminescence from a redox-active metal-organic framework. Biosens Bioelectron 2015; 68:197-203. [DOI: 10.1016/j.bios.2014.12.031] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 12/11/2014] [Accepted: 12/14/2014] [Indexed: 01/27/2023]
|
10
|
Jia Y, Yin XB, Zhang J, Zhou S, Song M, Xing KL. Graphene oxide modified light addressable potentiometric sensor and its application for ssDNA monitoring. Analyst 2013; 137:5866-73. [PMID: 23113318 DOI: 10.1039/c2an36087j] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A light addressable potentiometric sensor (LAPS) is a kind of silicon based semiconductor sensor, and surface modification is a fundamental problem for its application in biological fields. Graphene oxide (GO) based biochemically activated LAPS were proposed, called GO-LAPS. The GO-LAPS were applied to monitoring single strand DNA (ssDNA) probe immobilization and its hybridization with complementary ssDNA molecules of different chain lengths (30, 21 and 14 base pairs, respectively). It was discovered that the curves of LAPS' currents versus analyte concentrations for ssDNA probe binding and the target ssDNA hybridization were different. Explanations were proposed based on the semiconductor's surface-electric-field-effect and the electrical properties of ssDNA molecule. Moreover, comparisons between GO-LAPS and LAPS without GO modification were carried out. Enhanced response currents of GO-LAPS were reported experimentally and analyzed theoretically based on X-ray photoelectron spectroscopy (XPS) of GO-LAPS. The limitation of target ssDNA monitoring was 1 pM to 10 nM, which suggested that this LAPS based platform could be developed as a sensitive means for short chain ssDNA detection.
Collapse
Affiliation(s)
- Yunfang Jia
- College of Information Science Technology, Nankai University, 300071, China.
| | | | | | | | | | | |
Collapse
|
11
|
Lu Q, Zhou Z, Mei Y, Wei W, Liu S. Detection of DNA damage by thiazole orange fluorescence probe assisted with exonuclease III. Talanta 2013; 116:958-63. [PMID: 24148501 DOI: 10.1016/j.talanta.2013.07.038] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Revised: 07/15/2013] [Accepted: 07/16/2013] [Indexed: 11/17/2022]
Abstract
This work reports a fluorescent dye insertion approach for detection of DNA damage. The capture DNA with overhanging 3'-terminus was immobilized on silicon surface to hybridize with target DNA. The intercalation of cyanine dye of thiazole orange (TO) to the double helix structure of DNA (dsDNA) allowed intense enhancement of fluorescence signal. The DNA damage with chemicals led to poor intercalation of TO into double helix structure, resulting in the decrease of the fluorescence signal. This signal decrease could be further enhanced by exonuclease III (Exo III). With this approach, the target DNA could be detected down to 47 fM. Seven chemicals were chosen as models to monitor DNA damage. The results suggested that the present strategy could be developed to detect DNA damage, to classify the damaging mechanism with chemicals and to estimate the toxic effect of chemicals.
Collapse
Affiliation(s)
- Qian Lu
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Chemistry and Chemical Engineering, Southeast University, Jiangning District 211189, Nanjing, Jiangsu Province, PR China
| | | | | | | | | |
Collapse
|
12
|
Lu X, Wang L, Liu D, Du J, Wang H. Cathodic electrochemiluminescence of tris(2,2′-bipyridine) ruthenium(II) on Ag nanoparticles-modified electrode. J Electroanal Chem (Lausanne) 2013. [DOI: 10.1016/j.jelechem.2013.04.032] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
13
|
Wang XY, Gao A, Lu CC, He XW, Yin XB. An electrochemiluminescence aptasensor for thrombin using graphene oxide to immobilize the aptamer and the intercalated [Formula: see text] probe. Biosens Bioelectron 2013; 48:120-5. [PMID: 23665577 DOI: 10.1016/j.bios.2013.04.003] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Revised: 03/18/2013] [Accepted: 04/02/2013] [Indexed: 11/18/2022]
Abstract
The immobilization of aptamer and the introduction of signal molecule are two keys for the development of electrochemiluminescence (ECL) aptasensor. Herein, the immobilization strategy with graphene oxide (GO) and a functional oligonucleotide (FO) are used to develop a sensitive aptasensor with the detection of thrombin as a model. After GO is attached on glass carbon or gold electrodes through physical adsorption, the amino-tagged aptamer is immobilized on the electrode surface via an amide linkage between the amino group at the end of aptamer and the carboxyl groups on GO. The FO is designed to contain two parts: the complementary strand and an intermolecular duplex for the intercalation of Ru(phen)₃²⁺ as ECL probe. The hybridization between aptamer and its complementary part at FO achieves the introduction of Ru(phen)₃²⁺ probe onto the electrode surface for high ECL emission. The hybrid between aptamer and thrombin leads to the release of FO containing the intercalated Ru(phen)₃²⁺ probe. Correspondingly, the decreased ECL emission is used to quantify thrombin. The concentration-dependent response of thrombin is observed between 0.90 pM and 226 pM with a detection limit of 0.40 pM. While GO is used to immobilize the aptamer with various electrodes, such as glass carbon electrode and gold electrode in this work, GO can also preconcentrate TPrA on its surface to improve the sensitivity. The well-designed label-free ECL aptasensor strategy can be easily extended to other targets via the selection of their aptamers.
Collapse
Affiliation(s)
- Xiao-Yan Wang
- State Key Laboratory of Medicinal Chemical Biology and Key Laboratory of Functional Polymer Material-MOE, College of Chemistry, Nankai University, Tianjin 300071, PR China
| | | | | | | | | |
Collapse
|
14
|
Yang X, Wang A, Liu J. A facile label-free electrochemiluminescence biosensor for target protein specific recognition based on the controlled-release delivery system. Talanta 2013; 114:5-10. [PMID: 23953433 DOI: 10.1016/j.talanta.2013.03.077] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Revised: 03/17/2013] [Accepted: 03/28/2013] [Indexed: 01/19/2023]
Abstract
This paper described a novel label-free electrochemiluminescence assay for target protein based on a controlled delivery system. Iron oxide magnetic mesoporous silica nanocontainers were prepared by using a general procedure. The prepared magnetic mesoporous silica nanocontainers were applied to load the guest molecules [Ru(bpy)3](2+). Aptamers were used as gatekeepers on the pore outlets of the nanocontainers. In the presence of target proteins, the specific aptamer-protein interactions were employed as triggers for uncapping the pores and releasing the guest molecules from the nanocontainers. The amount of the guest molecule [Ru(bpy)3](2+) released from the magnetic mesoporous silica nanocontainers was monitored by the electrochemiluminescence assay. The results show that the releasing amount of [Ru(bpy)3](2+) is proportional to the thrombin concentration in the range of 0.6 pM-0.8 nM with a detection limit of 0.5 pM (S/N=3). The present work demonstrates that the fabricated nanocontainer using aptamer as the cap is a highly sensitive and selective key-in lock gating system for the label-free ECL biosensor.
Collapse
Affiliation(s)
- Xiaoyan Yang
- Shandong Provincial Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, PR China.
| | | | | |
Collapse
|
15
|
Bu NN, Gao A, He XW, Yin XB. Electrochemiluminescent biosensor of ATP using tetrahedron structured DNA and a functional oligonucleotide for Ru(phen)3(2+) intercalation and target identification. Biosens Bioelectron 2012; 43:200-4. [PMID: 23313611 DOI: 10.1016/j.bios.2012.11.027] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2012] [Revised: 09/12/2012] [Accepted: 11/26/2012] [Indexed: 02/01/2023]
Abstract
Restricted target accessibility and surface-induced perturbation of the aptamer structure are the main limitations in single-stranded DNA aptamer-based electrochemical sensors. Chemical labeling of the aptamer with a probe at the end of aptamer is inefficient and time-consuming. In this work, tetrahedron-structured DNA (ts-DNA) and a functionalized oligonucleotide (FO) were used to develop an electrochemiluminescence (ECL) aptasensor with adenosine triphosphate (ATP) as a model target. The ts-DNA was formed with three thiolated oligonucleotides and one oligonucleotide containing anti-ATP aptamer. The FO contained a complementary strand to the anti-ATP aptamer and an intermolecular duplex for Ru(phen)3(2+) intercalation. After the ts-DNA was immobilized on the electrode surface through gold-thiol interactions, hybridization between the anti-ATP aptamer and its complementary strand introduced the intercalated Ru(phen)3(2+) to the electrode. ECL emission from Ru(phen)3(2+) was observed with tripropylamine as a co-reactant. Once ATP reacted with its aptamer, the aptamer-complimentary strand duplex dissociated and the intermolecular duplex containing Ru(phen)3(2+) was released. The difference in emission before and after reaction with ATP was used to quantify ATP with a detection limit of 0.2nM. The ts-DNA increased the sensitivity compared to conventional methods, and the intercalation strategy avoided a complex chemical labeling procedure.
Collapse
Affiliation(s)
- Nan-Nan Bu
- State Key Laboratory of Medicinal Chemical Biology and Key Laboratory of Functional Polymer Material (MOE), College of Chemistry, Nankai University, Tianjin, 300071, PR China
| | | | | | | |
Collapse
|
16
|
Gao A, Tang CX, He XW, Yin XB. Electrochemiluminescent lead biosensor based on GR-5 lead-dependent DNAzyme for Ru(phen)3(2+) intercalation and lead recognition. Analyst 2012; 138:263-8. [PMID: 23120751 DOI: 10.1039/c2an36398d] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
An electrochemiluminescent (ECL) lead biosensor was developed based on GR-5 lead-dependent DNAzyme for lead recognition and intercalated ruthenium tris(1,10-phenanthroline) (Ru(phen)(3)(2+)) as the ECL probe. The thiol-modified substrate was first immobilized on the surface of the gold electrode via gold-sulfur self-assembly. Subsequently, the hybridization of DNAzyme and its substrate and the automatic intercalation of Ru(phen)(3)(2+) proceeded. Intercalated Ru(phen)(3)(2+) can transfer electrons through double-stranded DNA to the electrode and its electrochemiluminescence was excited with a potential step using tripropylamine as the coreactant. In the presence of lead, the substrate cleaves at the scissile ribo-adenine into two fragments. The dissociation of DNAzyme occurs, leading to the releasing of intercalated Ru(phen)(3)(2+) accompanied by a decrease in the intensity of electrochemiluminescence. A quantity of lead can be calculated from this decrease. The biosensor is highly sensitive and specific, along with an ultra-low limit of detection of 0.9 pM and a dynamic range from 2 to 1000 pM. It enables analysis of trace amounts of lead in serum samples. The combination of the intercalated-Ru(phen)(3)(2+) ECL probe and the cofactor-dependent DNAzyme may push the performance of cofactor-sensing tactics to the extreme.
Collapse
Affiliation(s)
- Ai Gao
- State Key Laboratory of Medicinal Chemical Biology, College of Chemistry, Nankai University, Tianjin, 300071, P.R. China
| | | | | | | |
Collapse
|
17
|
Yin XB. Functional nucleic acids for electrochemical and electrochemiluminescent sensing applications. Trends Analyt Chem 2012. [DOI: 10.1016/j.trac.2011.09.012] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
|
18
|
Lu X, liu D, Du J, Wang H, Xue Z, Liu X, Zhou X. Novel cathodic electrochemiluminescence of tris(bipyridine) ruthenium(ii) on a goldelectrode in acidic solution. Analyst 2012; 137:588-94. [DOI: 10.1039/c1an15862g] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
19
|
Zhao Y, He XW, Yin XB. Analyte-induced formation of partial duplexes for the preparation of a label-free electrochemiluminescent aptasensor. Chem Commun (Camb) 2011; 47:6419-21. [PMID: 21556396 DOI: 10.1039/c1cc11529d] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Analyte-induced formation of partial duplexes was used for biosensor development with cocaine as a model. The cocaine-aptamer interaction resulted in formation of a partial double strand section in the aptamer, where Ru(phen)(3)(2+) was intercalated for electrochemiluminescent analysis of cocaine.
Collapse
Affiliation(s)
- Yue Zhao
- Research Center for Analytical Sciences, College of Chemistry, Nankai University, Tianjin, 300071, PR. China
| | | | | |
Collapse
|
20
|
Tang CX, Bu NN, He XW, Yin XB. Functional nucleic acid-based electrochemiluminescent biosensor for interaction study and detection of Ag+ ions and cysteine. Chem Commun (Camb) 2011; 47:12304-6. [DOI: 10.1039/c1cc15323d] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|