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Qiu S, Yang L, Zhang X, Zhu L, Xiong X, Xiao T, Zhu L. Catalytic hairpin assembly-driven DNA walker to develop a label-free electrochemical aptasensor for antibiotic detection. Mikrochim Acta 2024; 191:569. [PMID: 39212834 DOI: 10.1007/s00604-024-06627-3] [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: 06/03/2024] [Accepted: 07/31/2024] [Indexed: 09/04/2024]
Abstract
An electrochemical aptasensor was developed by utilizing a DNA walker driven by catalytic hairpin assembly (CHA) with kanamycin as the model analyte. Kanamycin bound to the aptamer, causes the release of DNA walker, triggers the CHA reaction, leads to the cyclic movement of the walker's long arm, and results in cascade amplification of the signal. The guanine-rich sequences of the double-stranded products produced by CHA were folded to form G-quadruplex structures, with electrochemical active molecules Hemin embedded, forms G-quadruplex/Hemin complexes in situ on the electrode surface, thereby achieving sensitive, efficient, and label-free detection of kanamycin with a limit of detection (LOD) of 0.27 pM (S/N = 3). Meaningfully, the aptasensor demonstrated high sensitivity and reliability in the detection of kanamycin in milk and livestock wastewater samples, suggesting that it has great potential for application in detecting antibiotics in food products and water samples from the environment.
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Affiliation(s)
- Shan Qiu
- Key Laboratory of the Evaluation and Monitoring of Southwest Land Resources (Ministry of Education), Sichuan Normal University, Chengdu, 610066, China
- Sichuan Provincial Engineering Laboratory of Livestock Manure Treatment and Recycling, Sichuan Normal University, Chengdu, 610066, China
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610066, China
| | - Li Yang
- Key Laboratory of the Evaluation and Monitoring of Southwest Land Resources (Ministry of Education), Sichuan Normal University, Chengdu, 610066, China
- Sichuan Provincial Engineering Laboratory of Livestock Manure Treatment and Recycling, Sichuan Normal University, Chengdu, 610066, China
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610066, China
| | - Xuemei Zhang
- Key Laboratory of the Evaluation and Monitoring of Southwest Land Resources (Ministry of Education), Sichuan Normal University, Chengdu, 610066, China
- Sichuan Provincial Engineering Laboratory of Livestock Manure Treatment and Recycling, Sichuan Normal University, Chengdu, 610066, China
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610066, China
| | - Li Zhu
- Key Laboratory of the Evaluation and Monitoring of Southwest Land Resources (Ministry of Education), Sichuan Normal University, Chengdu, 610066, China
- Sichuan Provincial Engineering Laboratory of Livestock Manure Treatment and Recycling, Sichuan Normal University, Chengdu, 610066, China
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610066, China
| | - Xiaoli Xiong
- Key Laboratory of the Evaluation and Monitoring of Southwest Land Resources (Ministry of Education), Sichuan Normal University, Chengdu, 610066, China
- Sichuan Provincial Engineering Laboratory of Livestock Manure Treatment and Recycling, Sichuan Normal University, Chengdu, 610066, China
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610066, China
| | - Ting Xiao
- Key Laboratory of the Evaluation and Monitoring of Southwest Land Resources (Ministry of Education), Sichuan Normal University, Chengdu, 610066, China.
- Sichuan Provincial Engineering Laboratory of Livestock Manure Treatment and Recycling, Sichuan Normal University, Chengdu, 610066, China.
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610066, China.
| | - Liping Zhu
- Key Laboratory of the Evaluation and Monitoring of Southwest Land Resources (Ministry of Education), Sichuan Normal University, Chengdu, 610066, China.
- Sichuan Provincial Engineering Laboratory of Livestock Manure Treatment and Recycling, Sichuan Normal University, Chengdu, 610066, China.
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610066, China.
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2
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Liu L, Chang Y, Lou J, Zhang S, Yi X. Overview on the Development of Alkaline-Phosphatase-Linked Optical Immunoassays. Molecules 2023; 28:6565. [PMID: 37764341 PMCID: PMC10536125 DOI: 10.3390/molecules28186565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 09/05/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023] Open
Abstract
The drive to achieve ultrasensitive target detection with exceptional efficiency and accuracy requires the advancement of immunoassays. Optical immunoassays have demonstrated significant potential in clinical diagnosis, food safety, environmental protection, and other fields. Through the innovative and feasible combination of enzyme catalysis and optical immunoassays, notable progress has been made in enhancing analytical performances. Among the kinds of reporter enzymes, alkaline phosphatase (ALP) stands out due to its high catalytic activity, elevated turnover number, and broad substrate specificity, rendering it an excellent candidate for the development of various immunoassays. This review provides a systematic evaluation of the advancements in optical immunoassays by employing ALP as the signal label, encompassing fluorescence, colorimetry, chemiluminescence, and surface-enhanced Raman scattering. Particular emphasis is placed on the fundamental signal amplification strategies employed in ALP-linked immunoassays. Furthermore, this work briefly discusses the proposed solutions and challenges that need to be addressed to further enhance the performances of ALP-linked immunoassays.
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Affiliation(s)
- Lin Liu
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
| | - Yong Chang
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
| | - Jiaxin Lou
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
| | - Shuo Zhang
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
| | - Xinyao Yi
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
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Srinivasan S, Ranganathan V, McConnell EM, Murari BM, DeRosa MC. Aptamer-based colorimetric and lateral flow assay approaches for the detection of toxic metal ions, thallium(i) and lead(ii). RSC Adv 2023; 13:20040-20049. [PMID: 37409036 PMCID: PMC10318611 DOI: 10.1039/d3ra01658g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 06/14/2023] [Indexed: 07/07/2023] Open
Abstract
Thallium(i) and lead(ii) ions are heavy metals and extremely toxic. These metals are environmental pollutants, posing a severe risk to the environment and human health. In this study, two approaches were examined using aptamer and nanomaterial-based conjugates for thallium and lead detection. The first approach utilized an in-solution adsorption-desorption approach to develop colorimetric aptasensors for the detection of thallium(i) and lead(ii) using gold or silver nanoparticles. The second approach was the development of lateral flow assays, and their performance was tested with thallium (limit of detection is 7.4 μM) and lead ion (limit of detection is 6.6 nM) spiked into real samples. The approaches assessed are rapid, inexpensive, and time efficient with the potential to become the basis for future biosensor devices.
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Affiliation(s)
- Sathya Srinivasan
- Department of Chemistry, Carleton University 1125 Colonel By Drive Ottawa ON K1S 5B6 Canada +1-613-520-2600 ext. 4388
- Department of Biotechnology, School of Bioscience and Technology VIT Vellore 632 104 TN India
| | - Velu Ranganathan
- Department of Chemistry, Carleton University 1125 Colonel By Drive Ottawa ON K1S 5B6 Canada +1-613-520-2600 ext. 4388
| | - Erin M McConnell
- Department of Chemistry, Carleton University 1125 Colonel By Drive Ottawa ON K1S 5B6 Canada +1-613-520-2600 ext. 4388
| | - Bhaskar Mohan Murari
- Department of Sensor and Biomedical Technology, School of Electronics Engineering VIT Vellore 632 104 TN India
| | - Maria C DeRosa
- Department of Chemistry, Carleton University 1125 Colonel By Drive Ottawa ON K1S 5B6 Canada +1-613-520-2600 ext. 4388
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4
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Prospects and challenges of using electrochemical immunosensors as an alternative detection method for SARS-CoV-2 wastewater-based epidemiology. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 777:146239. [PMCID: PMC7934662 DOI: 10.1016/j.scitotenv.2021.146239] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 02/24/2021] [Accepted: 02/26/2021] [Indexed: 05/22/2023]
Abstract
Given its potential applications in confronting the COVID-19 pandemic, wastewater-based epidemiology (WBE) has attracted tremendous attention. Developing a fast, cost-effective, and practical method for SARS-CoV-2 detection in wastewater is of great significance to facilitate future WBE development. By now, the PCR-based approach serves as the reference method and “gold standard” to detect the virus in wastewater. However, we found a trend that the PCR-based method becomes almost an unshakable choice as more and more studies were published regarding SARS-CoV-2 WBE. Of note, the importance of exploring new, alternative approaches for SARS-CoV-2 detection in wastewater should not be underestimated. In this context, the prospect of using electrochemical immunosensors as the alternative detection method was investigated in this survey. Based on the previous efforts towards different virus immunoassay studies and newly published PCR-based COVD-19 WBE works, this survey provides new insights into the electrochemical immunoassay that have been widely adopted in body fluids virus detection, along with an extensive discussion of the detection mechanism, detection performance, past performances, current efforts, and potential challenges with wastewater detection. In the end, this survey concludes that using electrochemical immunosensors to analyze SARS-CoV-2 in wastewater samples quantitatively may have better feasibility and practicability than using the conventional PCR-based approach, especially when considering its fast detection, ease of miniaturization, and potential on-site measurement.
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Xiao Z, Meng H, Qin X, Sang X, Zhang Y, Yuan Y. The functionalization of gold nanoparticles as a novel platform for the highly efficient electrochemical detection of silver ions. Analyst 2021; 146:597-604. [DOI: 10.1039/d0an01870h] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A novel platform was constructed by the functionalization of gold nanoparticles for the highly efficient electrochemical detection of silver ions.
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Affiliation(s)
- Zhourui Xiao
- College of chemistry and bioengineering
- Guilin University of Technology
- Guilin 541004
- China
| | - Han Meng
- College of chemistry and bioengineering
- Guilin University of Technology
- Guilin 541004
- China
| | - Xuefei Qin
- College of chemistry and bioengineering
- Guilin University of Technology
- Guilin 541004
- China
| | - Xueqing Sang
- College of chemistry and bioengineering
- Guilin University of Technology
- Guilin 541004
- China
| | - Yun Zhang
- College of chemistry and bioengineering
- Guilin University of Technology
- Guilin 541004
- China
| | - Yali Yuan
- College of chemistry and bioengineering
- Guilin University of Technology
- Guilin 541004
- China
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6
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Bognár Z, Gyurcsányi RE. Aptamers against Immunoglobulins: Design, Selection and Bioanalytical Applications. Int J Mol Sci 2020; 21:E5748. [PMID: 32796581 PMCID: PMC7461046 DOI: 10.3390/ijms21165748] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 07/26/2020] [Accepted: 08/06/2020] [Indexed: 12/11/2022] Open
Abstract
Nucleic acid aptamers show clear promise as diagnostic reagents, as highly specific strands were reported against a large variety of biomarkers. They have appealing benefits in terms of reproducible generation by chemical synthesis, controlled modification with labels and functionalities providing versatile means for detection and oriented immobilization, as along with high biochemical and temperature resistance. Aptamers against immunoglobulin targets-IgA, IgM, IgG and IgE-have a clear niche for diagnostic applications, therefore numerous aptamers have been selected and used in combination with a variety of detection techniques. The aim of this review is to overview and evaluate aptamers selected for the recognition of antibodies, in terms of their design, analytical properties and diagnostic applications. Aptamer candidates showed convincing performance among others to identify stress and upper respiratory tract infection through SIgA detection, for cancer cell recognition using membrane bound IgM, to detect and treat hemolytic transfusion reactions, autoimmune diseases with IgG and detection of IgE for allergy diseases. However, in general, their use still lags significantly behind what their claimed benefits and the plethora of application opportunities would forecast.
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Affiliation(s)
| | - Róbert E. Gyurcsányi
- BME “Lendület” Chemical Nanosensors Research Group, Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Szent Gellért tér 4, H-1111 Budapest, Hungary;
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Comparison of turn-on and ratiometric fluorescent G-quadruplex aptasensor approaches for the detection of ATP. Anal Bioanal Chem 2019; 411:1319-1330. [PMID: 30612178 DOI: 10.1007/s00216-018-1484-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 10/19/2018] [Accepted: 11/07/2018] [Indexed: 12/31/2022]
Abstract
Two fluorescent aptasensor methods were developed for the detection of ATP in biochemical systems. The first method consisted of a label-free fluorescent "turn-on" approach using a guanine-rich ATP aptamer sequence and the DNA-binding agent berberine complex. In the presence of ATP, the ATP preferentially binds with its aptamer and conformationally changes into a G-quadruplex structure. The association of berberine with the G-quadruplex results in the enhancement of the fluorescence signal of the former. The detection limit of ATP was found to be 3.5 μM. Fluorescence, circular dichroism and melting temperature (Tm) experiments were carried out to confirm the binding specificity and structural changes. The second method employs the ratiometric fluorescent approach based on the Forster resonance energy transfer (FRET) for the detection of ATP using berberine along with a quencher (AuNRs, AgNPs) and a fluorophore (red quantum dots (RQDs), carbon dots (CDs)) labeled at 5' and 3' termini of the ATP-binding aptamer sequence. Upon addition of ATP and berberine, ATP specifically binds with its aptamer leading to the formation of G-quadruplex, and similarly, berberine also binds to the G-quadruplex. This leads to an enhancement of fluorescence of berberine while that of RQD and CDs were significantly quenched via FRET. The respective detection limits calculated were 3.6 μM and 3.8 μM, indicating these fluorescent aptasensor methods may be used for a wide variety of small molecules. Graphical abstract.
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8
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Srinivasan S, Ranganathan V, DeRosa MC, Murari BM. Label-free aptasensors based on fluorescent screening assays for the detection of Salmonella typhimurium. Anal Biochem 2018; 559:17-23. [PMID: 30081031 DOI: 10.1016/j.ab.2018.08.002] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 08/02/2018] [Accepted: 08/02/2018] [Indexed: 10/28/2022]
Abstract
We report two label-free fluorescent aptasensor methods for the detection of S. typhimurium. In the first method, we have used a ''turn off'' approach in which the aptamer is first intercalated with SYBR Green I (SG), leading to a greatly enhanced fluorescence signal. The addition of S. typhimurium (approximately 1530-96938 CFU/mL), which specifically binds with its aptamer and releases SG, leads to a linear decrease in fluorescence intensity. The lowest detection limit achieved with this approach was in the range of 733 CFU/mL. In the second method, a ''turn on'' approach was designed for S. typhimurium through the Förster resonance energy transfer (FRET) between Rhodamine B (RB) and gold nanoparticles (AuNPs). When the aptamer and AuNPs were mixed with RB, the fluorescence of RB was significantly quenched via FRET. The aptamer adsorbs to the AuNP surface to protect them from salt-induced aggregation, which leads to the fluorescence quenching of RB in presence of AuNPs. Upon the addition of S. typhimurium, S. typhimurium specifically binds with its aptamer and loses the capability to stabilize AuNPs. Thus, the salt easily induces the aggregation of AuNPs, resulting in the fluorescence recovery of the quenched RB. S. typhimurium concentrations ranging from 1530 to 96938 CFU/mL with the detection limit of 464 CFU/mL was achieved with this methodology. Given these data, some insights into the molecular interactions between the aptamer and the bacterial target are provided. These aptasensor methods also may be adapted for the detection of a wide variety of targets.
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Affiliation(s)
- Sathya Srinivasan
- Department of Biotechnology, School of Bioscience and Technology, VIT University, Vellore, 632 104, TN, India; Department of Chemistry, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada.
| | - Velu Ranganathan
- Department of Chemistry, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada.
| | - Maria C DeRosa
- Department of Chemistry, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada.
| | - Bhaskar Mohan Murari
- Department of Biotechnology, School of Bioscience and Technology, VIT University, Vellore, 632 104, TN, India; Department of Sensor and Biomedical Technology, School of Electronics Engineering, VIT University, Vellore, 632 104, TN, India.
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9
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Hashkavayi AB, Raoof JB, Ojani R, Kavoosian S. Ultrasensitive electrochemical aptasensor based on sandwich architecture for selective label-free detection of colorectal cancer (CT26) cells. Biosens Bioelectron 2016; 92:630-637. [PMID: 27829554 DOI: 10.1016/j.bios.2016.10.042] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 09/29/2016] [Accepted: 10/18/2016] [Indexed: 01/10/2023]
Abstract
Colorectal cancer is one of the most common cancers in the world and has no effective treatment. Therefore, development of new methods for early diagnosis is instantly required. Biological recognition probes such as synthetic receptor and aptamer is one of the candidate recognition layers to detect important biomolecules. In this work, an electrochemical aptasensor was developed by fabricating an aptamer-cell-aptamer sandwich architecture on an SBA-15-3-aminopropyltriethoxysilane (SBA-15-pr-NH2) and Au nanoparticles (AuNPs) modified graphite screen printed electrode (GSPE) surface for the selective, label-free detection of CT26 cancer cells. Based on the incubation of the thiolated aptamer with CT26 cells, the electron-transfer resistance of Fe (CN)63-/4- redox couple increased considerably on the aptasensor surface. The results obtained from cyclic voltammetry and electrochemical impedance spectroscopy studies showed that the fabricated aptasensor can specifically identify CT26 cells in the concentration ranges of 10-1.0×105cells/mL and 1.0×105-6.0×106 cells/mL, respectively, with a detection limit of 2cells/mL. Applying the thiol terminated aptamer (5TR1) as a recognition layer led to a sensor with high affinity for CT26 cancer cells, compared to control cancer cells of AGS cells, VERO Cells, PC3 cells and SKOV-3 cells. Therefore a simple, rapid, label free, inexpensive, excellent, sensitive and selective electrochemical aptasensor based on sandwich architecture was developed for detection of CT26 Cells.
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Affiliation(s)
- Ayemeh Bagheri Hashkavayi
- Electroanalytical Chemistry Research Laboratory, Department of Analytical Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran
| | - Jahan Bakhsh Raoof
- Electroanalytical Chemistry Research Laboratory, Department of Analytical Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran.
| | - Reza Ojani
- Electroanalytical Chemistry Research Laboratory, Department of Analytical Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran
| | - Saeid Kavoosian
- North Research Center, Pasteur Institute of Iran, Amol, Iran
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10
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Duffy GF, Moore EJ. Electrochemical Immunosensors for Food Analysis: A Review of Recent Developments. ANAL LETT 2016. [DOI: 10.1080/00032719.2016.1167900] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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11
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Deng H, Li J, Zhang Y, Pan H, Xu G. A new strategy for label-free electrochemical immunoassay based on "gate-effect" of β-cyclodextrin modified electrode. Anal Chim Acta 2016; 926:48-54. [PMID: 27216392 DOI: 10.1016/j.aca.2016.04.035] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 04/18/2016] [Accepted: 04/19/2016] [Indexed: 12/14/2022]
Abstract
A novel label-free electrochemical immunoassay was developed for prostate-specific antigen (PSA) detection via using β-cyclodextrin (β-CD) assembled layer created gates for the electron transfer of probe. To construct the sensor, a gold electrode was self-assembled with monoclonal anti-PSA antibody labeled 6-mercapto-β-cyclodextrin. Interspaces among β-CD molecules in the layer were automatically formed on gold electrode, which act as the channel of the electron transfer of [Fe(CN)6](3-/4-) probe. When PSA bind with anti-PSA, it can block these channels on the electrode surface due to their steric hindrance effect, resulting in the decrease in redox current of the probe. Through such a gate-controlled effect, ultra trace amount of PSA may make the currents change greatly after the immunoreaction, which enhanced the signal-to-noise ratio to achieve the amplification effect. By evaluating the logarithm of PSA concentrations, the immunosensor had a good linear response to the current changes with a detection limit of 0.3 pg/mL (S/N = 3) when PSA concentration ranged from 1.0 pg/mL to 1.0 ng/mL. The label-free immunosensor exhibited satisfactory performances in sensitivity, repeatability as well as specificity.
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Affiliation(s)
- Huan Deng
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, PR China
| | - Jianping Li
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, PR China.
| | - Yun Zhang
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, PR China
| | - Hongcheng Pan
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, PR China
| | - Guobao Xu
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, PR China; State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China.
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Liu X, Li Q, Chen L, Zhou J, Liu M, Shen Y. One-step immobilization antibodies using ferrocene-containing thiol aromatic aldehyde for the fabrication of a label-free electrochemical immunosensor. RSC Adv 2016. [DOI: 10.1039/c6ra24122k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This work focuses on a facile method for antibody immobilization to fabricate a label-free electrochemical immunosensor using ferrocene-containing thiol aromatic aldehyde (FcSA) synthesized by us.
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Affiliation(s)
- Xiaoying Liu
- College of Science
- Science and Technological Innovation Platform
- Hunan Agricultural University
- ChangSha 410128
- PR China
| | - Qiang Li
- College of Science
- Science and Technological Innovation Platform
- Hunan Agricultural University
- ChangSha 410128
- PR China
| | - Lijuan Chen
- College of Science
- Science and Technological Innovation Platform
- Hunan Agricultural University
- ChangSha 410128
- PR China
| | - Jiheng Zhou
- College of Science
- Science and Technological Innovation Platform
- Hunan Agricultural University
- ChangSha 410128
- PR China
| | - Meiling Liu
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Hunan Normal University
- Changsha 410081
| | - Youming Shen
- College of Chemistry and Chemical Engineering
- Hunan University of Arts and Science
- ChangDe 415000
- PR China
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13
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Vorobyeva M, Timoshenko V, Vorobjev P, Venyaminova A. Aptamers Against Immunologic Targets: Diagnostic and Therapeutic Prospects. Nucleic Acid Ther 2015; 26:52-65. [PMID: 26643948 DOI: 10.1089/nat.2015.0568] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The concept of in vitro selection of nucleic acid aptamers emerged 25 years ago, and since then tremendous progress has been achieved in the development of different aptamers and their applications for various bioanalytical and therapeutic purposes. Among other protein targets of aptamers, immune system proteins are of particular interest both as diagnostic markers and therapeutic targets. The present review summarizes up-to-date articles concerning the selection and design of DNA and RNA aptamers against immunologic targets such as antibodies, cytokines, and T-cell and B-cell receptors. We also discuss the prospects of employing aptamers as recognizing modules of diagnostic aptasensors, potential therapeutic candidates for the treatment of autoimmune diseases and cancer, and specific tools for functional studies of immune system proteins.
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Affiliation(s)
- Mariya Vorobyeva
- Institute of Chemical Biology and Fundamental Medicine , Siberian Division of Russian Academy of Sciences, Novosibirsk, Russia
| | - Valentina Timoshenko
- Institute of Chemical Biology and Fundamental Medicine , Siberian Division of Russian Academy of Sciences, Novosibirsk, Russia
| | - Pavel Vorobjev
- Institute of Chemical Biology and Fundamental Medicine , Siberian Division of Russian Academy of Sciences, Novosibirsk, Russia
| | - Alya Venyaminova
- Institute of Chemical Biology and Fundamental Medicine , Siberian Division of Russian Academy of Sciences, Novosibirsk, Russia
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14
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Zhang X, Shen G, Shen Y, Yin D, Zhang C. Direct immobilization of antibodies on a new polymer film for fabricating an electrochemical impedance immunosensor. Anal Biochem 2015; 485:81-5. [DOI: 10.1016/j.ab.2015.06.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 06/03/2015] [Accepted: 06/04/2015] [Indexed: 12/23/2022]
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15
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Duan N, Wu S, Ma X, Xia Y, Wang Z. A universal fluorescent aptasensor based on AccuBlue dye for the detection of pathogenic bacteria. Anal Biochem 2014; 454:1-6. [PMID: 24650583 DOI: 10.1016/j.ab.2014.03.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Revised: 02/28/2014] [Accepted: 03/07/2014] [Indexed: 11/25/2022]
Abstract
We report a universal fluorescent aptasensor based on the AccuBlue dye, which is impermeant to cell membranes, for the detection of pathogenic bacteria. The sensor consists of AccuBlue, an aptamer strand, and its complementary strand (cDNA) that partially hybridizes to the aptamer strand. We have fabricated two models by changing the sequence of the reaction between the elements in the system. One is the "signal on" model in which the aptamer is first bound to the target, followed by the addition of cDNA and AccuBlue, at which time the cDNA hybridizes with the free unreacted aptamer and forms a double-stranded DNA (dsDNA) duplex. Such hybridization causes AccuBlue to insert into the dsDNA and exhibit significantly increased fluorescence intensity because of the specific intercalation of the AccuBlue into dsDNA rather than single-stranded DNA (ssDNA). The other model, "signal off," involves hybridization of the aptamer with cDNA first, resulting in high fluorescence intensity on the addition of AccuBlue. When the target is added, the aptamer binds the target, causing the cDNA to detach from the dsDNA duplex and resulting in low fluorescence as a result of the liberation of AccuBlue. Because this design is based purely on DNA hybridization, and AccuBlue is impermeant to cell membranes, it could potentially be adapted to a wide variety of analytes.
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Affiliation(s)
- Nuo Duan
- State Key Laboratory of Food Science and Technology, Synergetic Innovation Center of Food Safety and Nutrition, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Shijia Wu
- State Key Laboratory of Food Science and Technology, Synergetic Innovation Center of Food Safety and Nutrition, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Xiaoyuan Ma
- State Key Laboratory of Food Science and Technology, Synergetic Innovation Center of Food Safety and Nutrition, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Yu Xia
- State Key Laboratory of Food Science and Technology, Synergetic Innovation Center of Food Safety and Nutrition, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Zhouping Wang
- State Key Laboratory of Food Science and Technology, Synergetic Innovation Center of Food Safety and Nutrition, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
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Shuangjie X, He X, Jianshe L. An Immunosensor for Ultrasensitive Detection of 1-Pyrenebutyric Acid with Enhanced Electrochemical Performance Based on a Graphene-Ionic Liquid Doped Chitosan Film Modified Glassy Carbon Electrode. ELECTROANAL 2013. [DOI: 10.1002/elan.201200604] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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17
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Yi H, Xu W, Yuan Y, Wu Y, Chai Y, Yuan R. A sensitive electrochemical aptasensor for thrombin detection based on exonuclease-catalyzed target recycling and enzyme-catalysis. Biosens Bioelectron 2013; 47:368-72. [PMID: 23603135 DOI: 10.1016/j.bios.2013.03.045] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Revised: 03/12/2013] [Accepted: 03/20/2013] [Indexed: 01/19/2023]
Abstract
In the present study, a sensitive electrochemical aptasensor based on exonuclease-catalyzed target recycling and enzyme-catalysis was developed for thrombin (TB) detection. Firstly, the alcohol dehydrogenase (ADH) was abundantly embedded in the 3-(mercaptopropyl)trimethoxysilane (MPTS) sol with a 3-D network that exhibited tunable porosity and high thermal stability. ADH, as an alcohol oxidase, catalyzed the conversation of alcohol into acetaldehyde coupling with the production of NADH in the presence of NAD(+). Then the immobilized gold nanoparticles (AuNPs) could electrocatalyze the oxidation of NADH, finally promoting the redox reaction of the electroactive material methylene blue (MB) labeled on the hybrid double strand DNA (dsDNA). Furthermore, when the mixture of TB and RecJf exonuclease was introduced, TB combined with the thrombin aptamer II (TBA II) and the aptamer-TB complex was formed. And then, the RecJf exonuclease selectively degraded the TBA II from 5'→3', releasing the target TB into the solution. The free TB was reused to combine with other TBA II to accomplish the target recycling and realize the electrochemical signal amplification. In this way, excellent sensitivity of the aptasensor was obtained. The thrombin aptasensor achieved a detection limit of 1.7pM (defined as S/N=3) with a linear range from 5pM to 100nM. In addition, the proposed aptasensor had good stability and sensitivity, and would become a promising choice for the protein diagnostics in clinical analysis.
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Affiliation(s)
- Huayu Yi
- Key Laboratory on Luminescence and Real-Time Analysis, School of Chemistry and Chemical Engineering, Southwest University, The Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Chongqing 400715, PR China
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18
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Ricci F, Adornetto G, Palleschi G. A review of experimental aspects of electrochemical immunosensors. Electrochim Acta 2012. [DOI: 10.1016/j.electacta.2012.06.033] [Citation(s) in RCA: 225] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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19
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Nie J, Deng Y, Deng QP, Zhang DW, Zhou YL, Zhang XX. A self-assemble aptamer fragment/target complex based high-throughput colorimetric aptasensor using enzyme linked aptamer assay. Talanta 2012; 106:309-14. [PMID: 23598133 DOI: 10.1016/j.talanta.2012.11.018] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Revised: 11/01/2012] [Accepted: 11/08/2012] [Indexed: 10/27/2022]
Abstract
Enzyme linked aptamer assay (ELAA) uses an aptamer as recognition element and enzyme as signal readout element for establishing different kinds of aptasensors. We reported herein a high-throughput colorimetric aptasensor based on ELAA only requiring a single aptamer sequence for cocaine detection. An anti-cocaine aptamer was cleaved into two fragments, one of which was immobilized on a DNA-BIND 96-well plate via 5'-labeled primary amine and the other one was biotin labeled. The presence of two aptamer fragments and the target molecule led to the formation of aptamer fragments/target complexes. Streptavidin-horseradish peroxidase (SA-HRP) was used to react with biotin in order to obtain quantitative signals. A linear response towards cocaine concentration in the range of 5-200 μM and a detection limit down to 2.8 μM (S/N=3) were achieved. The specificity and application in real sample were validated. Furthermore, a verification test of thrombin detection in the same strategy illustrated its feasibility for not only small molecule but also biomacromolecule. With the advantage of high-throughput, easy operation, high specificity, the colorimetric assay based on ELAA requiring a single aptamer sequence opens up a new approach for detecting different kinds of targets via specific affinity recognition among target and suitably cleaved aptamer fragments.
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Affiliation(s)
- Ji Nie
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Biochemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing 100871, China
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20
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Li H, Wang C, Wu Z, Lu L, Qiu L, Zhou H, Shen G, Yu R. An electronic channel switching-based aptasensor for ultrasensitive protein detection. Anal Chim Acta 2012; 758:130-7. [PMID: 23245905 DOI: 10.1016/j.aca.2012.10.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2012] [Revised: 10/05/2012] [Accepted: 10/11/2012] [Indexed: 01/19/2023]
Abstract
Due to the ubiquity and essential of the proteins in all living organisms, the identification and quantification of disease-specific proteins are particularly important. Because the conformational change of aptamer upon its target or probe/target/probe sandwich often is the primary prerequisite for the design of an electrochemical aptameric assay system, it is extremely difficult to construct the electrochemical aptasensor for protein assay because the corresponding aptamers cannot often meet the requirement. To circumvent the obstacles mentioned, an electronic channel switching-based (ECS) aptasensor for ultrasensitive protein detection is developed. The essential achievement made is that an innovative sensing concept is proposed: the hairpin structure of aptamer is designed to pull electroactive species toward electrode surface and makes the surface-immobilized IgE serve as a barrier that separates enzyme from its substrate. It seemingly ensures that the ECS aptasensor exhibits most excellent assay features, such as, a detection limit of 4.44×10(-6)μg mL(-1) (22.7fM, 220zmol in 10-μL sample) (demonstrating a 5 orders of magnitude improvement in detection sensitivity compared with classical electronic aptasensors) and dynamic response range from 4.44×10(-6) to 4.44×10(-1)μg mL(-1). We believe that the described sensing concept here might open a new avenue for the detection of proteins and other biomacromolecules.
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Affiliation(s)
- Hongbo Li
- State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
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21
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Li B, Ellington* AD. Electrochemical Techniques as Powerful Readout Methods for Aptamer-based Biosensors. DNA CONJUGATES AND SENSORS 2012. [DOI: 10.1039/9781849734936-00211] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Aptamers are single-stranded nucleic acids that can be selected in vitro with special folding structures to bind to many different small-molecule, protein, and cellular targets. Over the past two decades, aptamers have become novel promising recognition elements for the fabrication of biosensors. These ‘aptasensors’ have several advantages over antibodies in that they are relatively easy to synthesise or modify in vitro, and can be appended with linkers and reporters for adaptation to various sensing strategies. In this chapter, we introduce the various electrochemical techniques that can be used as powerful readout methods for aptasensors, providing a brief introduction to aptamers and related electrochemical techniques, and then a detailed description of various branches within the field, including labelled strategies, unlabelled strategies, and enzyme-amplified strategies. For each type of approach, several basic and improved design principles will be addressed. It is hoped that, through this discussion, readers will get a sense of how several variables (aptamers, targets and redox reporters) are successfully combined with electrochemical techniques in order to produce a series of sensing platforms with high selectivity and sensitivity.
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Affiliation(s)
- Bingling Li
- Institute for Cellular and Molecular Biology Center for Systems and Synthetic Biology, Department of Chemistry and Biochemistry, University of Texas at Austin, Austin, TX 78712 USA
| | - Andrew D. Ellington*
- Institute for Cellular and Molecular Biology Center for Systems and Synthetic Biology, Department of Chemistry and Biochemistry, University of Texas at Austin, Austin, TX 78712 USA
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22
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Lee CY, Wu KY, Su HL, Hung HY, Hsieh YZ. Sensitive label-free electrochemical analysis of human IgE using an aptasensor with cDNA amplification. Biosens Bioelectron 2012; 39:133-8. [PMID: 22883750 DOI: 10.1016/j.bios.2012.07.009] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2012] [Revised: 07/06/2012] [Accepted: 07/07/2012] [Indexed: 11/19/2022]
Abstract
In this study, we developed an ultrasensitive label-free aptamer-based electrochemical biosensor, featuring a highly specific anti-human immunoglobulin E (IgE) aptamer as a capture probe, for human IgE detection. Construction of the aptasensor began with the electrodeposition of gold nanoparticles (AuNPs) onto a graphite-based screen-printed electrode (SPE). After immobilizing the thiol-capped anti-human IgE aptamer onto the AuNPs through self-assembly, we treated the electrode with mercaptohexanol (MCH) to ensure that the remaining unoccupied surfaces of the AuNPs would not undergo nonspecific binding. We employed a designed complementary DNA featuring a guanine-rich section in its sequence (cDNA G1) as a detection probe to bind with the unbound anti-human IgE aptamer. We measured the redox current of methylene blue (MB) to determine the concentration of human IgE in the sample. When the aptamer captured human IgE, the binding of cDNA G1 to the aptamer was inhibited. Using cDNA G1 in the assay greatly amplified the redox signal of MB bound to the detection probe. Accordingly, this approach allowed the linear range (coefficient of determination: 0.996) for the analysis of human IgE to extend from 1 to 100,000pM; the limit of detection was 0.16pM. The fabricated aptasensor exhibited good selectivity toward human IgE even when human IgG, thrombin, and human serum albumin were present at 100-fold concentrations. This method should be readily applicable to the detection of other analytes, merely by replacing the anti-human IgE aptamer/cDNA G1 pair with a suitable anti-target molecule aptamer and cDNA.
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Affiliation(s)
- Cheng-Yu Lee
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan, ROC
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23
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Lee JY, Jin JH, Kim JH, Kim MJ, Lee CJ, Min NK. Plasma-activated carbon nanotube-based high sensitivity immunosensors for monitoring Legionella pneumophila by direct detection of maltose binding protein peptidoglycan-associated lipoprotein (MBP-PAL). Biotechnol Bioeng 2012; 109:1471-8. [DOI: 10.1002/bit.24418] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2011] [Revised: 11/26/2011] [Accepted: 12/13/2011] [Indexed: 01/13/2023]
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24
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Wei X, Li H, Li Z, Vuki M, Fan Y, Zhong W, Xu D. Metal-enhanced fluorescent probes based on silver nanoparticles and its application in IgE detection. Anal Bioanal Chem 2011; 402:1057-63. [PMID: 22159465 DOI: 10.1007/s00216-011-5591-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2011] [Revised: 10/26/2011] [Accepted: 11/20/2011] [Indexed: 10/14/2022]
Abstract
In this paper, a novel metal plasmon coupled with an aptamer-nucleotide hybridized probe was fabricated and applied for protein detection. The specific aptamer and single-strand oligonucleotide were chemically bound to silver nanoparticles (AgNPs), and Cy5-labeled, complementary single-strand oligonucleotides were hybridized with the particle-bound oligonucleotides. The hybridized DNA duplexes were regarded as rigid rods that separated the fluorophore Cy5 and the surface of AgNPs to reduce the competitive quenching. Using a model system comprising human immunoglobulin E (IgE) as the analyte and goat antihuman IgE as immobilized capture antibody on glass slides, we demonstrate that the detection performance of the synthetic probe was superior to the aptamer-based fluorescent probes. The results showed a good linear correlation for human IgE in the range from 10 ng/ml to 6.25 μg/ml. The detection limit obtained was 1 ng/ml, which was 50 times lower than that using Cy5 oligonucleotide/aptamer hybrid duplex (Probe2) due to the metal-enhanced fluorescence effect. This new strategy opens the possibility for the preparation of high-sensitivity detection probes based on metal nanoparticles.
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Affiliation(s)
- Xia Wei
- Department of Analytical Chemistry, China Pharmaceutical University, Nanjing 210009, China
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25
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Zhang DW, Sun CJ, Zhang FT, Xu L, Zhou YL, Zhang XX. An electrochemical aptasensor based on enzyme linked aptamer assay. Biosens Bioelectron 2011; 31:363-8. [PMID: 22100766 DOI: 10.1016/j.bios.2011.10.046] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2011] [Revised: 10/24/2011] [Accepted: 10/24/2011] [Indexed: 10/15/2022]
Abstract
An aptamer is an artificial functional oligonucleic acid, which can interact with its target molecule with high affinity and specificity. Enzyme linked aptamer assay (ELAA) is developed to detect cocaine using aptamer fragment/cocaine configuration based on the affinity interaction between aptamer fragments with cocaine. The aptasensor was constructed by cleaving anticocaine aptamer into two fragments: one was assembled on a gold electrode surface, while the other was modified with biotin at 3'-end, which could be further labelled with streptavidin-horseradish peroxidase (SA-HRP). Upon binding with cocaine, the HRP-labelled aptamer fragment/cocaine complex formed on the electrode would increase the reduction current of hydroquinone (HQ) in the presence of H(2)O(2). The sensitivity and the specificity of the proposed electrochemical aptasensor were investigated by differential pulse voltammetry (DPV). The results indicated that the DPV signal change could be used to sensitively detect cocaine with the dynamic range from 0.1 μM to 50 μM and the detection limit down to 20 nM (S/N=3). The proposed aptasensor has the advantages of high sensitivity and low background current. Furthermore, a new configuration for ELAA requiring only a single aptamer sequence is constructed, which can be generalized for detecting different kinds of targets by cleaving the aptamers into two suitable segments.
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Affiliation(s)
- De-Wen Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Biochemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing 100871, China
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26
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Sun Y, Cai S, Cao Z, Lau C, Lu J. Aptameric system for the highly selective and ultrasensitive detection of protein in human serum based on non-stripping gold nanoparticles. Analyst 2011; 136:4144-51. [PMID: 21881666 DOI: 10.1039/c1an15520b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A novel approach is proposed in this study for the development of an aptameric assay system for protein based on non-stripping gold nanoparticles (NPs)-triggered chemiluminescence (CL) upon target binding. The strategy chiefly depends on the formation of a sandwich-type immunocomplex among the capture antibody immobilized on the polystyrene microwells, target protein and aptamer-functionalized gold NPs. Introduction of target protein into the assay system leads to the attachment of gold NPs onto the surface of the microwells and thus the assembled gold NPs could trigger the reaction between luminol and AgNO(3) with a CL emission. Further signal amplification was achieved by a simple gold metal catalytic deposition onto the gold NPs. Such an amplified CL transduction allowed for the detection of model target IgE down to the 50 fM, which is better than most existing aptameric methods for IgE detection. This new protocol also provided a good capability in discriminating IgE from nontarget proteins such as IgG, IgA, IgM and interferon. The practical application of the proposed gold NPs-based immunoassay was successfully carried out for the determination of IgE in 35 human serum samples. Overall, the proposed assay system exhibits excellent analytical characteristics (e.g., a detection limit on the attomolar scale and a linear dynamic range of 4 orders of magnitude), and it is also straightforward to adapt this strategy to detect a spectrum of other proteins by using different aptamers. This new CL strategy might create a novel technology for developing simple biosensors in the sensitive and selective detection of target protein in a variety of clinical, environmental and biodefense applications.
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Affiliation(s)
- Yanhua Sun
- School of Pharmacy, Key Laboratory of Smart Drug Delivery, Ministry of Education & PLA, Fudan University, 826 Zhangheng Road, Shanghai, 201203, China
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27
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Li J, Xu M, Huang H, Zhou J, Abdel-Halimb ES, Zhang JR, Zhu JJ. Aptamer-quantum dots conjugates-based ultrasensitive competitive electrochemical cytosensor for the detection of tumor cell. Talanta 2011; 85:2113-20. [PMID: 21872066 DOI: 10.1016/j.talanta.2011.07.055] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2011] [Revised: 07/11/2011] [Accepted: 07/12/2011] [Indexed: 01/17/2023]
Abstract
A novel competitive electrochemical cytosensor was reported by using aptamer (Apt)-quantum dots (Qdots) conjugates as a platform for tumor cell recognition and detection. The complementary DNA (cDNA), aptamer and Qdots could be assembled to the gold electrode surface. When the target cells existed, they could compete with cDNA to bind with Apt-Qdots conjugates based on the specific recognition of aptamer to MUC1 protein overexpressed on the cell surface, which resulted in the denaturation of double-stranded DNA structure and the release of the Apt-Qdots conjugates from the electrode. Electrochemical stripping measurement was then employed to determine the Cd(2+) concentration in Qdots left at the electrode. The peak current was inversely proportional to the logarithmic value of cell concentration ranging from 1.0 × 10(2) to 1.0×10(6) cells mL(-1) with a detection limit of 100 cells mL(-1). Meanwhile, the recognition of aptamer to the target cells could be clearly observed through the strong fluorescence from Qdots. This is an example of the combination of aptamer and nanoparticles for the application of cell analysis, which is essential to cancer diagnosis and therapy.
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Affiliation(s)
- Jingjing Li
- State Key Lab of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People's Republic of China
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28
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Mandler D, Kraus-Ophir S. Self-assembled monolayers (SAMs) for electrochemical sensing. J Solid State Electrochem 2011. [DOI: 10.1007/s10008-011-1493-6] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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29
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Holland JG, Jordan DS, Geiger FM. Divalent metal cation speciation and binding to surface-bound oligonucleotide single strands studied by second harmonic generation. J Phys Chem B 2011; 115:8338-45. [PMID: 21612240 DOI: 10.1021/jp202884n] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The binding of Sr(II), Ca(II), Mg(II), Ba(II), Mn(II), Zn(II), and Cd(II) to silica/water interfaces functionalized with A(15)T(6) oligonucleotides was quantified at pH 7 and 10 mM NaCl using the Eisenthal χ((3)) technique. The binding free energies range from -31.1(6) kJ/mol for Ba(II) to -33.8(4) kJ/mol for Ca(II). The ion densities were found to range from 2(1) ions/strand for Zn(II) to 11(1) ions/strand for Cd(II). Additionally, we quantified Mg(II) binding in the presence of varying background electrolyte concentrations which showed that the binding free energies changed in a linear fashion from -39.3(8) to -27(1) kJ/mol over the electrolyte concentration range of 1-80 mM, respectively. An adsorption free energy versus interfacial potential analysis allowed us to elucidate the speciation of the bound Mg(II) ions and to identify three possible binding pathways. Our findings suggest that Mg(II) binds as a fully hydrated divalent cation, most likely displacing DNA-bound Na ions. These measurements will serve as a benchmark for computer simulations of divalent metal cation/DNA interactions for geochemical and biosensing applications.
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Affiliation(s)
- Joseph G Holland
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
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30
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Song KM, Cho M, Jo H, Min K, Jeon SH, Kim T, Han MS, Ku JK, Ban C. Gold nanoparticle-based colorimetric detection of kanamycin using a DNA aptamer. Anal Biochem 2011; 415:175-81. [PMID: 21530479 DOI: 10.1016/j.ab.2011.04.007] [Citation(s) in RCA: 282] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2011] [Revised: 03/30/2011] [Accepted: 04/04/2011] [Indexed: 02/07/2023]
Abstract
A selective kanamycin-binding single-strand DNA (ssDNA) aptamer (TGGGGGTTGAGGCTAAGCCGA) was discovered through in vitro selection using affinity chromatography with kanamycin-immobilized sepharose beads. The selected aptamer has a high affinity for kanamycin and also for kanamycin derivatives such as kanamycin B and tobramycin. The dissociation constants (K(d) [kanamycin]=78.8 nM, K(d) [kanamycin B]=84.5 nM, and K(d) [tobramycin]=103 nM) of the new aptamer were determined by fluorescence intensity analysis using 5'-fluorescein amidite (FAM) modification. Using this aptamer, kanamycin was detected down to 25 nM by the gold nanoparticle-based colorimetric method. Because the designed colorimetric method is simple, easy, and visible to the naked eye, it has advantages that make it useful for the detection of kanamycin. Furthermore, the selected new aptamer has many potential applications as a bioprobe for the detection of kanamycin, kanamycin B, and tobramycin in pharmaceutical preparations and food products.
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Affiliation(s)
- Kyung-Mi Song
- Department of Chemistry, Pohang University of Science and Technology, Pohang, Gyungbuk 790-784, South Korea
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Abstract
In this review, the current status of research in electrochemical immunosensors is considered. We primarily focus on label-free and enzyme-labeled immunosensors, and the analytical capabilities of these devices are discussed. Moreover, the use of magnetic beads as new materials for immunosensors coupled with electrochemical sensing is also described, together with the application of new molecules such as aptamers as specific biorecognition elements. Examples of the applicability of these devices in solving various analytical problems in clinical, environmental and food fields are reported. Finally, the prospects for the further development of immunosensor technologies are shown.
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32
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Samanta D, Sarkar A. Immobilization of bio-macromolecules on self-assembled monolayers: methods and sensor applications. Chem Soc Rev 2011; 40:2567-92. [DOI: 10.1039/c0cs00056f] [Citation(s) in RCA: 313] [Impact Index Per Article: 24.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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33
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Feng K, Zhao J, Wu ZS, Jiang J, Shen G, Yu R. High-sensitive electrochemical detection of point mutation based on polymerization-induced enzymatic amplification. Biosens Bioelectron 2010; 26:3187-91. [PMID: 21239161 DOI: 10.1016/j.bios.2010.12.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2010] [Revised: 12/11/2010] [Accepted: 12/13/2010] [Indexed: 11/27/2022]
Abstract
Here a highly sensitive electrochemical method is described for the detection of point mutation in DNA. Polymerization extension reaction is applied to specifically initiate enzymatic electrochemical amplification to improve the sensitivity and enhance the performance of point mutation detection. In this work, 5'-thiolated DNA probe sequences complementary to the wild target DNA are assembled on the gold electrode. In the presence of wild target DNA, the probe is extended by DNA polymerase over the free segment of target as the template. After washing with NaOH solution, the target DNA is removed while the elongated probe sequence remains on the sensing surface. Via hybridizing to the designed biotin-labeled detection probe, the extended sequence is capable of capturing detection probe. After introducing streptavidin-conjugated alkaline phosphatase (SA-ALP), the specific binding between streptavidin and biotin mediates a catalytic reaction of ascorbic acid 2-phosphate (AA-P) substrate to produce a reducing agent ascorbic acid (AA). Then the silver ions in solution are reduced by AA, leading to the deposition of silver metal onto the electrode surface. The amount of deposited silver which is determined by the amount of wild target can be quantified by the linear sweep voltammetry (LSV). The present approach proved to be capable of detecting the wild target DNA down to a detection limit of 1.0×10(-14) M in a wide target concentration range and identifying -28 site (A to G) of the β-thalassemia gene, demonstrating that this scheme offers a highly sensitive and specific approach for point mutation detection.
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Affiliation(s)
- Kejun Feng
- State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, China.
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Peng Q, Cao Z, Lau C, Kai M, Lu J. Aptamer-barcode based immunoassay for the instantaneous derivatization chemiluminescence detection of IgE coupled to magnetic beads. Analyst 2010; 136:140-7. [PMID: 20944841 DOI: 10.1039/c0an00448k] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report on a highly sensitive aptameric assay system for the determination of IgE, where a special chemiluminescence (CL) reagent, 3,4,5-trimethoxylphenylglyoxal (TMPG), acts as the signaling molecule and polystyrene beads as the amplification platform. Briefly, a "sandwich-type" detection strategy is employed in our design, where magnetic beads functionalized with a capture antibody were reacted with the target protein IgE, and then sandwiched with the aptamer-barcodes which were prepared by assembling polystyrene beads with IgE aptamer. The target immunoreaction event could be sensitively detected via an instantaneous derivatization reaction between TMPG and the guanine (G) nucleotides within the aptamer-barcodes to form an unstable CL intermediate for the generation of light. Further signal amplification is achieved by extending the G nucleotide-rich domain on the aptamer backbone for second amplification. Such simple amplified CL transduction allows the detection of IgE down to the 4.6 pM level, which is better than most previous aptameric methods for IgE detection. This new protocol also provides a good capability in discriminating IgE from nontarget proteins such as IgG, IgA, IgM, interferon and thrombin. The practical application of the proposed aptamer-barcode based immunoassay was successfully carried out for the determination of IgE in 20 human serum samples. It is straightforward to adapt this strategy to detect a spectrum of other proteins by using different aptamers, thus this method may offer a new direction in designing high-performance CL aptasensors for early diagnoses of diseases.
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Affiliation(s)
- Qianwen Peng
- School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai, China
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35
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36
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CHIKAE M, IDEGAMI K, NAGATANI N, TAMIYA E, TAKAMURA Y. Highly Sensitive Method for Electrochemical Detection of Silver Nanoparticle Labels in Metalloimmunoassay with Preoxidation/Reduction Signal Enhancement. ELECTROCHEMISTRY 2010. [DOI: 10.5796/electrochemistry.78.748] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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37
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Miranda-Castro R, de-los-Santos-Álvarez N, Lobo-Castañón M, Miranda-Ordieres A, Tuñón-Blanco P. Structured Nucleic Acid Probes for Electrochemical Devices. ELECTROANAL 2009. [DOI: 10.1002/elan.200904653] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Kim YJ, Kim YS, Niazi JH, Gu MB. Electrochemical aptasensor for tetracycline detection. Bioprocess Biosyst Eng 2009; 33:31-7. [PMID: 19701778 DOI: 10.1007/s00449-009-0371-4] [Citation(s) in RCA: 112] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2009] [Accepted: 08/05/2009] [Indexed: 11/30/2022]
Abstract
An electrochemical aptasensor was developed for the detection of tetracycline using ssDNA aptamer that selectively binds to tetracycline as recognition element. The aptamer was highly selective for tetracycline which distinguishes minor structural changes on other tetracycline derivatives. The biotinylated ssDNA aptamer was immobilized on a streptavidin-modified screen-printed gold electrode, and the binding of tetracycline to aptamer was analyzed by cyclic voltammetry and square wave voltammetry. Our results showed that the minimum detection limit of this sensor was 10 nM to micromolar range. The aptasensor showed high selectivity for tetracycline over the other structurally related tetracycline derivatives (oxytetracycline and doxycycline) in a mixture. The aptasensor developed in this study can potentially be used for detection of tetracycline in pharmaceutical preparations, contaminated food products, and drinking water.
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Affiliation(s)
- Yoon-Jin Kim
- School of Life Sciences and Biotechnology, Korea University, Anam-dong, Seongbuk-gu, Seoul 136-701, Republic of Korea
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Suci PA, Kang S, Young M, Douglas T. A Streptavidin−Protein Cage Janus Particle for Polarized Targeting and Modular Functionalization. J Am Chem Soc 2009; 131:9164-5. [PMID: 19522495 DOI: 10.1021/ja9035187] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Peter A. Suci
- Center for BioInspired Nanomaterials, Department of Chemistry & Biochemistry, and Department of Plant Sciences and Plant Pathology, Montana State University, Bozeman, Montana 59717
| | - Sebyung Kang
- Center for BioInspired Nanomaterials, Department of Chemistry & Biochemistry, and Department of Plant Sciences and Plant Pathology, Montana State University, Bozeman, Montana 59717
| | - Mark Young
- Center for BioInspired Nanomaterials, Department of Chemistry & Biochemistry, and Department of Plant Sciences and Plant Pathology, Montana State University, Bozeman, Montana 59717
| | - Trevor Douglas
- Center for BioInspired Nanomaterials, Department of Chemistry & Biochemistry, and Department of Plant Sciences and Plant Pathology, Montana State University, Bozeman, Montana 59717
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Bojorge Ramírez N, Salgado AM, Valdman B. The evolution and developments of immunosensors for health and environmental monitoring: problems and perspectives. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2009. [DOI: 10.1590/s0104-66322009000200001] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
| | | | - B. Valdman
- Universidade Federal de Rio de Janeiro, Brasil
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Xu Y, Cheng G, He P, Fang Y. A Review: Electrochemical Aptasensors with Various Detection Strategies. ELECTROANAL 2009. [DOI: 10.1002/elan.200804561] [Citation(s) in RCA: 100] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Affiliation(s)
- Juewen Liu
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, USA
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Yao W, Wang L, Wang H, Zhang X, Li L. An aptamer-based electrochemiluminescent biosensor for ATP detection. Biosens Bioelectron 2009; 24:3269-74. [PMID: 19443209 DOI: 10.1016/j.bios.2009.04.016] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2009] [Revised: 03/26/2009] [Accepted: 04/09/2009] [Indexed: 10/20/2022]
Abstract
An aptamer-based electrochemiluminescent (ECL-AB) biosensor for ATP detection with high sensitivity and specificity was developed. The biosensor was assembled based on several steps. First, a complementary DNA (cDNA) of the ATP-binding aptamer, which has six complementary bases at both its ends, was hybridized with the aptamer molecule to form a rigid, linear double-stranded DNA (ds-DNA). The ds-DNA was then labeled with a ruthenium complex at the 3' terminus of cDNA, followed by the immobilization of this ds-DNA onto Au electrode surface through the 5'-HS on the cDNA. In the presence of ATP, due to the ATP binding to the aptamer, the aptamer molecules dissociated from the ds-DNA complex, which resulted in the formation of stem-loop structure of the single-stranded cDNA and led to the increase of the ECL signal. The increased ECL intensity was found linearly to the logarithm of the concentration of ATP ranging from 0.05 nM to 10 nM with a detection limit of 0.02 nM. Different from other ECL-AB biosensors with aptamers as the probes, this sensing system proposed here is based on the utilization of the cDNA of aptamers as the probes for ECL sensing. Therefore, such sensing system could provide a promising label-free and more readily regenerated model for aptamer-based small-molecules detection.
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Affiliation(s)
- Wu Yao
- Anhui Key Laboratory of Chemo-Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, PR China
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Enzyme-enhanced fluorescence detection of DNA on etched optical fibers. Biosens Bioelectron 2009; 24:2943-6. [PMID: 19307112 DOI: 10.1016/j.bios.2009.02.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2008] [Revised: 02/16/2009] [Accepted: 02/17/2009] [Indexed: 11/21/2022]
Abstract
A novel DNA biosensor based on enzyme-enhanced fluorescence detection on etched optical fibers was developed. The hybridization complex of DNA probe and biotinylated target was formed on the etched optical fiber, and was then bound with streptavidin labeled horseradish peroxidase (streptavidin-HRP). The target DNA was quantified through the fluorescent detection of bi-p,p'-4-hydroxyphenylacetic acid (DBDA) generated from the substrate 4-hydroxyphenylacetic acid (p-HPA) under the catalysis of HRP, with a detection limit of 1 pM and a linear range from 1.69 pM to 169 pM. It is facile to regenerate this sensor through surface treatment with concentrated urea solution. It was discovered that the sensor can retain 70% of its original activity after three detection-regeneration cycles.
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