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Zhang Q, Liu Q, Liu Y, Wang H, Chen J, Shi T. PEC thrombin aptasensor based on Ag-Ag 2S decorated hematite photoanode with signal-down effect of precipitation catalyzed by G-quadruplexes/hemin. Biosens Bioelectron 2023; 232:115321. [PMID: 37075612 DOI: 10.1016/j.bios.2023.115321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 03/12/2023] [Accepted: 04/13/2023] [Indexed: 04/21/2023]
Abstract
A photoelectrochemical (PEC) aptasensor for thrombin detection was rationally designed based on the photoanode of one-dimensional hematite nanorods (α-Fe2O3 NRs) with several steps of modifications. Uniform α-Fe2O3 NRs were grown vertically on the surface of fluorine-doped tin oxide (FTO) conductive glass through a one-step hydrothermal method; then Ag was grown on the surface of α-Fe2O3 NRs through a photoreduction method followed by a partial in-situ transformation into Ag2S, conferring an improvement on the initial photocurrent. Two main critical factors, namely, the steric hindrance of thrombin, benzoquinone (BQ) precipitation oxidized by H2O2 under the catalysis of G-quadruplexes/hemin, contributed to the sensitive signal-down response toward the target. Photocurrent signals related with thrombin concentration was established for thrombin analysis due to the non-conductive complex as well as their competitive consumption of electron donors and irradiation light. The excellent initial photocurrent was combined with the signal-down amplification in the design of the biosensor, conferring a limit of detection (LOD) as low as 40.2 fM and a wide linear range from 0.0001 nM to 50 nM for the detection of thrombin. The proposed biosensor was also assessed in terms of selectivity, stability, and applicability in human serum analyses, which provided an appealing maneuver for the specific analysis of thrombin in trace amount.
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Affiliation(s)
- Qiaoxia Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Zaozhuang University, Zaozhuang, 277160, Shandong Province, China.
| | - Qingyun Liu
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, 266590, Shandong Province, China.
| | - Yang Liu
- College of Chemistry, Chemical Engineering and Materials Science, Zaozhuang University, Zaozhuang, 277160, Shandong Province, China
| | - Houchen Wang
- College of Chemistry, Chemical Engineering and Materials Science, Zaozhuang University, Zaozhuang, 277160, Shandong Province, China
| | - Jialiang Chen
- College of Chemistry, Chemical Engineering and Materials Science, Zaozhuang University, Zaozhuang, 277160, Shandong Province, China
| | - Tiesheng Shi
- College of Chemistry, Chemical Engineering and Materials Science, Zaozhuang University, Zaozhuang, 277160, Shandong Province, China.
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Zhang Z, Jia X, Xu X. An electrochemical aptasensor for detection of streptomycin based on signal amplification assisted by functionalized gold nanoparticles and hybridization chain reaction. Mikrochim Acta 2023; 190:152. [PMID: 36959354 DOI: 10.1007/s00604-023-05737-8] [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: 08/23/2022] [Accepted: 03/08/2023] [Indexed: 03/25/2023]
Abstract
A ratiometric electrochemical aptasensor based on gold nanoparticles (AuNPs) functionalization and hybridization chain reaction (HCR) assisted signal amplification has been for the first time designed for the detection of streptomycin (STR). The double-stranded DNA (dsDNA) formed by the hybridization of ferrocene (Fc)-labeled STR aptamer (Apt) and capture probe (CP) is first immobilized on the gold electrode (GE) surface via Au-S reaction. The specific binding of the target and Apt results in numerous Fc detachment from the sensing interface. Then, the remaining single-stranded CP is combined with AuNPs modified with initiator DNA (iDNA) by auxiliary DNA (aDNA). Among them, the iDNA triggers HCR between two hairpin probes (H1/H2), thus capturing a large number of methylene blue (MB) electrochemical probe, which generates a strong electrochemical signal of MB and a weak electrochemical signal of Fc. Signals are collected by square wave voltammetry (the potential window ranging from -0.5 V to 0.6 V, vs. Ag/AgCl ), and the oxidation peak currents at -0.200 V (MB) and 0.416 V (Fc) are recorded. The use of the ratiometric method has effectively improved the accuracy and reliability of the analysis. The successful application of AuNPs and HCR greatly improves the sensitivity of the sensor, and the detection limit is as low as 0.08 pM. It can sensitively determine STR in the range 0.1 pM to 10 nM. In addition, the designed aptasensor has been successfully applied to the detection of STR in milk and honey samples.
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Affiliation(s)
- Zhoubing Zhang
- Key Laboratory for Analytical Science of Food Safety and Biology, MOE, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, 350108, Fujian, China
| | - Xiaorun Jia
- Key Laboratory for Analytical Science of Food Safety and Biology, MOE, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, 350108, Fujian, China
| | - Xueqin Xu
- Key Laboratory for Analytical Science of Food Safety and Biology, MOE, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, 350108, Fujian, China.
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Wang W, Ge Q, Zhao X. Enzyme-free isothermal amplification strategy for the detection of tumor-associated biomarkers: A review. Trends Analyt Chem 2023. [DOI: 10.1016/j.trac.2023.116960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Liu L, Li Q, Shi H, Gao L. Thrombin Determination Using Graphene Oxide Sensors with Co-Assisted Amplification. MICROMACHINES 2022; 13:1435. [PMID: 36144058 PMCID: PMC9502102 DOI: 10.3390/mi13091435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/24/2022] [Accepted: 08/24/2022] [Indexed: 06/16/2023]
Abstract
Graphene oxide (GO) is widely used in sensors. The detection of proteins based on bare GO has been developed; however, the detection sensitivity needs to be improved. In this paper, a novel GO-DNA sensor for thrombin detection was developed using an aptamer linked to the surface of GO. Polyethylene glycol (PEG) was further used to prevent thrombin from nonspecific adsorption and to improve the sensitivity of the sensor for detection of thrombin. In order to improve the limit of detection for thrombin, we developed a GO and RecJf exonuclease co-assisted signal amplification strategy, and a detection limit of 24.35 fM for thrombin was achieved using this strategy. The results show that it is a promising method in analytical applications.
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Affiliation(s)
- Lei Liu
- Department of Kidney Transplantation, The Second Xiangya Hospital of Central South University, Changsha 410011, China
| | - Qin Li
- School of Life Sciences, Jiangsu University, Zhenjiang 212013, China
| | - Haixia Shi
- Physical Education Department, Jiangsu University, Zhenjiang 212013, China
| | - Li Gao
- School of Life Sciences, Jiangsu University, Zhenjiang 212013, China
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Beyrampour-Basmenj H, Pourhassan-Moghamddam M, Nakhjavani SA, Faraji N, Alivand M, Zarghami N, Talebi M, Rahmati M, Ebrahimi-Kalan A. Sensitive and convenient detection of miRNA-145 using a gold nanoparticle-HCR coupled system: computational and in vitro validations. IEEE Trans Nanobioscience 2022; PP:155-162. [PMID: 35533171 DOI: 10.1109/tnb.2022.3170530] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Multiple sclerosis (MS) remains a challenging disease that requires timely diagnosis. Therefore, an ultrasensitive optical biosensor based on hybridization chain reaction (HCR) was developed to detect microRNA-145 (miRNA-145) as an MS biomarker. To construct such a sensor, HCR occurred between specific hairpin probes, as MB1 contains a poly-cytosine nucleotide loop and MB2 has a poly-guanine nucleotide sticky end. By introducing miR-145 as a target sequence, long-range dsDNA polymers are formed. Then, positively charged gold nanoparticles (AuNPs) were incubated with the HCR product, which adsorbed onto the dsDNA polymers due to electrostatic adsorption. This resulted in the precipitation of the AuNPs. By incubating different concentrations of miR-145 with AuNPs, the changes in the UV-vis spectrum of the supernatant were analyzed. The proposed biosensor showed a great ability to detect miR-145 in a wide linear range from 1 pM-1 nM with an excellent detection limit (LOD) of 0.519 nM. Furthermore, the developed biosensor indicated considerable selectivity in discriminating between miR-145 and mismatched sequences. It shows high selectivity in differentiating targets. Interestingly, the proposed method was also able to detect miRNA-145 in the diluted serum samples. In conclusion, this sensing platform exhibits high selectivity and specificity for the detection of circulating microRNAs, which holds great promise for translation to routine clinical applications.
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Chen J, Zhu D, Huang T, Yang Z, Liu B, Sun M, Chen JX, Dai Z, Zou X. Isothermal Self-Primer EXPonential Amplification Reaction (SPEXPAR) for Highly Sensitive Detection of Single-Stranded Nucleic Acids and Proteins. Anal Chem 2021; 93:12707-12713. [PMID: 34491714 DOI: 10.1021/acs.analchem.1c02588] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Development of versatile sensing methods for sensitive and specific detection of clinically relevant nucleic acids and proteins is of great value for disease monitoring and diagnosis. In this work, we propose a novel isothermal Self-primer EXPonential Amplification Reaction (SPEXPAR) strategy based on a rationally engineered structure-switchable Metastable Hairpin template (MH-template). The MH-template initially keeps inactive with its self-primer overhanging a part of target recognition region to inhibit polymerization. The present targets can specifically compel the MH-template to transform into an "activate" conformation that primes a target-recyclable EXPAR. The method is simple and sensitive, can accurately and facilely detect long-chain single-stranded nucleic acids or proteins without the need of exogenous primer probes, and has a high amplification efficiency theoretically more than 2n. For a proof-of-concept demonstration, the SPEXPAR method was used to sensitively detect the characteristic sequence of the typical swine fever virus (CSFV) RNA and thrombin, as nucleic acid and protein models, with limits of detection down to 43 aM and 39 fM, respectively, and even the CSFV RNA in attenuated vaccine samples and thrombin in diluted serum samples. The SPEXPAR method may serve as a powerful technique for the biological research of single-stranded nucleic acids and proteins.
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Affiliation(s)
- Jun Chen
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, P. R. China
| | - Daozhong Zhu
- Guangzhou Customs Technology Center, Guangzhou 510623, P. R. China
| | - Ting Huang
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, P. R. China
| | - Zizhong Yang
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, P. R. China
| | - Birong Liu
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, P. R. China
| | - Mengxu Sun
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, P. R. China
| | - Jin-Xiang Chen
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, P. R. China
| | - Zong Dai
- Key Laboratory of Sensing Techno logy and Biomedical Instrument of Guangdong Province, School of Biomedical Engineering, Sun Yat-Sen University, Guangzhou 510006, P. R. China
| | - Xiaoyong Zou
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
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Kucharska K, Pilz M, Bielec K, Kalwarczyk T, Kuźma P, Hołyst R. Two Intercalation Mechanisms of Oxazole Yellow Dimer (YOYO-1) into DNA. Molecules 2021; 26:molecules26123748. [PMID: 34205435 PMCID: PMC8234192 DOI: 10.3390/molecules26123748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 06/14/2021] [Accepted: 06/15/2021] [Indexed: 11/16/2022] Open
Abstract
The oxazole yellow dye, YOYO-1 (a symmetric homodimer), is a commonly used molecule for staining DNA. We applied the brightness analysis to study the intercalation of YOYO-1 into the DNA. We distinguished two binding modes of the dye to dsDNA: mono-intercalation and bis-intercalation. Bis-intercalation consists of two consecutive mono-intercalation steps, characterised by two distinct equilibrium constants (with the average number of base pair per binding site equals 3.5): K1=3.36±0.43×107M−1 and K2=1.90±0.61×105M−1, respectively. Mono-intercalation dominates at high concentrations of YOYO-1. Bis-intercalation occurs at low concentrations.
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Advances in aptamer-based nanomaterials for separation and analysis of non-genetic biomarkers in biofluids. Sci China Chem 2021. [DOI: 10.1007/s11426-020-9955-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Li Y, Li X, Yang F, Yuan R, Xiang Y. Target-induced activation of polymerase activity for recycling signal amplification cascades for sensitive aptamer-based detection of biomarkers. Analyst 2021; 146:1590-1595. [PMID: 33459734 DOI: 10.1039/d0an02288h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
It is of great importance to develop biosensing methods for the sensitive and selective analysis of biomarkers at very low levels in biological samples. Using a new target-induced activation of the DNA polymerase activity for recycling amplification cascades, we describe an aptamer-based method for highly sensitive detection of platelet-derived growth factor BB (PDGF-BB) in human serums. The polymerase activity is initially inhibited by the binding of the polymerase to the enzyme aptamer sequence. PDGF-BB associates with and switches a PDGF-BB binding aptamer to trigger the release of an active polymerase, which further initiates the simultaneous recycling of the target PDGF-BB molecules and the enzyme aptamer sequence for the subsequent displacement of the fluorescently quenched probes to recover the fluorescence. Due to two recycling cascades, substantial fluorescence magnification is obtained for the highly sensitive detection of PDGF-BB with a low detection limit of 5.1 pM. Moreover, the potential applicability of this method for real samples was verified by determining PDGF-BB in diluted human serums, relying on the excellent specificity and selectivity of the aptamer. The demonstration of the PDGF-BB assay method here thus can be expanded for the construction of diverse sensing platforms for detecting different trace biomarkers with the integration of an elaborate design of the aptamer probes.
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Affiliation(s)
- Yusi Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
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Bezuneh TT, Fereja TH, Addisu Kitte S, Li H, Jin Y. Enzyme-free signal amplified Au nanoparticle fluorescence detection of thrombin via target-triggered catalytic hairpin assembly. Microchem J 2021. [DOI: 10.1016/j.microc.2020.105649] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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