1
|
Chen Y, Zhang Y, Zhao X, Xu W, Wang S. Ultrasensitive and high selectivity detection of fibrin using Y-shaped DNA-homing peptide doped probe on localized surface plasmon resonance platform. Anal Chim Acta 2025; 1336:343535. [PMID: 39788687 DOI: 10.1016/j.aca.2024.343535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2024] [Revised: 11/27/2024] [Accepted: 12/07/2024] [Indexed: 01/12/2025]
Abstract
BACKGROUND Localized surface plasmon resonance (LSPR) sensor has drawn continuous attention to application of the detection of antibody, protein, virus, and bacteria. However, natural recognition molecules, such as antibody, which possess some properties, including low thermal stability, complicated operation and high price, uncontrollability of length and size and a tendency to accumulate easily on the surface of chip to reduce the sensitive of method. Furthermore, common blocking agents are not suitable for development of novel biosensors. There is a significant demand for an innovative artificial probe that can meet the high recognition capabilities and ultrasensitive required by LSPR sensors. RESULTS A LSPR sensor was developed for ultrasensitive detection of fibrin with a Y-shaped DNA-homing peptide doped probe. The Y-shaped probe, composed of three single stranded DNA (ssDNA), was immobilized on AuNPs chip. The two arms of Y-shaped probe were functionalized with homing peptides capable of recognizing fibrin. Additionally, in combination with the hybridization chain reaction, the growth of the arms facilitated enhanced functionalization with homing peptides to improve the sensitivity of method. Furthermore, ssDNA with a G-quadruplex structure acted as a novel blocking agent and was immobilized on the surface of the LSPR chip to minimize non-specific adsorption. Ultimately, remarkable changes in the LSPR signal were observed upon introduction of fibrin. Under optimized experimental conditions, the response of the LSPR biosensor followed a linear regression equation ΔLSPR = 5420.53 + 395.14lgC (where C represents the concentration of fibrin in mol L-1), exhibiting a high linear correlation coefficient R = 0.9979 and attaining a limit of detection of 1 × 10-14 mol L-1. SIGNIFICANCE It is believed that this work holds promising potential for the Y-shaped DNA-homing peptide doped probe, which takes advantage of the DNA structure with nanometer precision through programmable hybridization and the specific recognition of the homing peptide. Herein the developed LSPR biosensing platform demonstrated outstanding specificity and ultrasensitivity, rendering it suitable for early cancer screening.
Collapse
Affiliation(s)
- Yawei Chen
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, 252000, China
| | - Yuanfu Zhang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, 252000, China.
| | - Xue Zhao
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, 252000, China
| | - Wenyu Xu
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, 252000, China
| | - Shuhao Wang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, 252000, China
| |
Collapse
|
2
|
Pan J, Zeng Y, Wang Y, Ren X, Yang F, Chen J. Logic Circuits for Intelligent Microcystin Monitoring Based on Aptamer Recognition and Toehold-Mediated Hairpin DNA Self-Assembly. Anal Chem 2025. [PMID: 39824752 DOI: 10.1021/acs.analchem.4c06655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2025]
Abstract
A sensitive fluorescence biosensor was developed for microcystin-LR (MC-LR) detection using H1, H2, and H3 DNA probes as sensing elements. The aptamer in H1 can recognize the target. H2 was labeled with FAM and BHQ. The MC-LR and H1 binding will activate the H2 and H3 self-assemblies through toehold-mediated strand displacement. In the formed products (MC-LR/H1/nH2/nH3), FAM and BHQ will be separated and a high FAM fluorescence signal can be observed for the MC-LR assay. The biosensor is sensitive with a detection limit of 53 fM. We further constructed several logic circuits (AND-AND cascaded circuit, feedforward circuit, and resource allocation circuit) using MC-LR, MC-LA, and MC-YR as the three inputs. The numbers 0 and 1 are used to code the input and output signals. The AND-AND cascade circuit can produce a high output signal only in the (111) input combination. In the feedforward circuit, MC-LR and MC-LA can activate the logic circuit to produce high signals, and MC-YR will inhibit the self-assembly and execute the negative feedforward operation. Through the rational design of the DNA probe hybridizations on four different magnetic beads (MBs), the resource allocation circuit can achieve an intelligent allocation of input information. Our proposed fluorescence biosensor can not only provide a sensitive platform for microcystin detection but also serve as a smart and intelligent logic system for microcystin sensing.
Collapse
Affiliation(s)
- Jiafeng Pan
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China
- Institute of Eco-Environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
| | - Ying Zeng
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Yuyan Wang
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Xiaoya Ren
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Fei Yang
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Junhua Chen
- Institute of Eco-Environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
| |
Collapse
|
3
|
Bao Y, Sang Y, Yan X, Hu M, Wang N, Dong Y, Wang L. A enzyme-free fluorescence quenching sensor for amplified detection of kanamycin in milk based on competitive triggering strategies. RSC Adv 2024; 14:19076-19082. [PMID: 38873552 PMCID: PMC11172409 DOI: 10.1039/d4ra01703j] [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: 03/05/2024] [Accepted: 05/25/2024] [Indexed: 06/15/2024] Open
Abstract
In this work, we constructed a FAM fluorescence quenching biosensor based on an aptamer competition recognition and enzyme-free amplification strategy. We design a competing unit consisting of an aptamer chain and a complementary chain, and a catalytic hairpin self-assembly (CHA) unit consisting of two hairpins in which the complementary chain can trigger the catalytic hairpin self-assembly. In the initial state, the aptamer chain is combined with the complementary chain, the catalytic hairpin self-assembly unit is inhibited, the FAM fluorescence group was far away from the BHQ1 quenching group, and the fluorescence is turn-on. In the presence of kanamycin, the aptamer chain recognizes kanamycin and doesn't form double chains, resulting in the free complementary chain triggering hairpin 1 (H1), and then H1 triggering hairpin 2 (H2), FAM fluorophore is close to the BHQ1 quenching group, and the fluorescence is off-on. When H1 and H2 form a cyclic reaction, enzyme-free amplification is achieved and there is significant output of the fluorescence signal. Therefore, the biosensor has good performance in detecting kanamycin, the detection line is 54 nM, the linear range is 54 nM-0.9 μM, and it can achieve highly selective detection of kanamycin. Kanamycin residue may cause serious harm to human health. The high sensitivity detection of kanamycin is urgent, so this project has a great application potential for food detection.
Collapse
Affiliation(s)
- Yangyinchun Bao
- College of Life Science, Shaanxi Normal University Xi'an Shaanxi 710119 PR China
| | - Yidan Sang
- College of Life Science, Shaanxi Normal University Xi'an Shaanxi 710119 PR China
| | - Xuemei Yan
- College of Life Science, Shaanxi Normal University Xi'an Shaanxi 710119 PR China
| | - Mengyang Hu
- College of Life Science, Shaanxi Normal University Xi'an Shaanxi 710119 PR China
| | - Na Wang
- College of Life Science, Shaanxi Normal University Xi'an Shaanxi 710119 PR China
| | - Yafei Dong
- College of Life Science, Shaanxi Normal University Xi'an Shaanxi 710119 PR China
- College of Computer Sciences, Shaanxi Normal University Xi'an Shaanxi 710119 PR China
| | - Luhui Wang
- College of Life Science, Shaanxi Normal University Xi'an Shaanxi 710119 PR China
| |
Collapse
|
4
|
Wang G, Guo J, Zou J, Lei Z. CeO 2 nanocages with tetra-enzyme mimetic activities for dual-channel ratiometric colorimetric detection of microcystins-LR. Anal Chim Acta 2024; 1306:342599. [PMID: 38692792 DOI: 10.1016/j.aca.2024.342599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 03/08/2024] [Accepted: 04/11/2024] [Indexed: 05/03/2024]
Abstract
BACKGROUND Microcystin-leucine-arginine (MC-LR) produced by various cyanobacteria during harmful algal bloom poses serious threats to drinking water safety and human health. Conventional chromatography-based detection methods require expensive instruments and complicated sample pretreatment, limiting their application for on-site detection. Colorimetric aptasensors are simple and rapid, and are amenable to fast detection. However, they provide only one output signal, resulting in poor sensitivity and accuracy. Dual-channel ratiometric colorimetric method based on the peroxidase-like activity of nanozyme can achieve self-calibration by recording two reverse signals, providing significantly enhanced sensitivity and accuracy. RESULTS CeO2 nanocages (CeO2 NCs) with tetra-enzyme mimetic activities (oxidase-, peroxidase-, catalase- and superoxide dismutase-like activities) were facilely synthesized using zeolitic imidazolate framework-67 (ZIF-67) as sacrificial template. The peroxidase-like activity of CeO2 NCs can be regulated by DNA, and it showed opposite response to two chromogenic substrates (2,2'-azino-bis-(3-ethylbenzthiazoline-6-sulfonic acid) (ABTS) and 3,3',5,5'-tetramethylbenzidine (TMB)), which was mainly attributed to the changed affinity. On the basis of MC-LR aptamer-tunable peroxidase-like activity of CeO2 NCs in TMB and ABTS channel, a dual-channel ratiometric colorimetric aptasensor was constructed for detection of MC-LR. Compared with conventional single-signal colorimetric assays, the proposed method showed lower limit of detection (0.66 pg mL-1) and significantly enhanced sensitivity. Moreover, the practicability of the ratiometric colorimetric assay was demonstrated by detecting MC-LR in real water samples, and satisfactory recoveries (94.9-101.9 %) and low relative standard deviations (1.6-6.3 %) were obtained. SIGNIFICANCE This work presents a nanozyme-based ratiometric colorimetric aptasensor for MC-LR detection by recording the reverse responses of two chromogenic reactions. Benefiting from the self-calibration function, the method can achieve higher sensitivity and accuracy. The short detection time and practical application in real water samples show great potential for environmental monitoring.
Collapse
Affiliation(s)
- Guodong Wang
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, PR China
| | - Jingfang Guo
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, PR China
| | - Jing Zou
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, PR China
| | - Zhen Lei
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, PR China.
| |
Collapse
|
5
|
Peng K, Sha J, Fang X, Li M, Yu J, Hao L, Xu F. Detection of Cadmium(II) in Aquatic Products Using a Rolling-Circle Amplification-Coupled Ratio Fluorescent Probe Based on an Aptamer-Peptide Conjugate. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:8167-8179. [PMID: 38509823 DOI: 10.1021/acs.jafc.3c08636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
The existing aptamers for cadmium (Cd2+), the common toxic heavy metal contaminant in food, cannot meet the requirements for detecting Cd2+ in rapid detection methods. In previous work, we found that coupling aptamer-peptide conjugates (APCs) with peptides and aptamers can provide a less disruptive method with a significantly improved affinity. Moreover, we found that the spatial conformation of aptamers and peptides is crucial for obtaining proper affinity in APC. Therefore, we describe a simple design strategy to obtain a series of APCs with different affinities by designing peptide orientations (N-terminal, C-terminal). The best affinity was found for APC(C1-N) with a binding constant (Ka) of 2.23 × 106 M-1, indicating that the APC(C1-N) affinity was significantly increased by 829.17% over aptamer. Finally, a rolling-circle amplification (RCA)-coupled ratio fluorescence-based biosensor for Cd2+ detection was established with a detection limit of 0.0036 nM, which has great potential for practical aquatic product detection.
Collapse
Affiliation(s)
- Kaimin Peng
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai Engineering Research Center of Food Rapid Detection, Shanghai 200093, China
| | - Jiahao Sha
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai Engineering Research Center of Food Rapid Detection, Shanghai 200093, China
| | - Xinyu Fang
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai Engineering Research Center of Food Rapid Detection, Shanghai 200093, China
| | - Mengqiu Li
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai Engineering Research Center of Food Rapid Detection, Shanghai 200093, China
| | - Jingsong Yu
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai Engineering Research Center of Food Rapid Detection, Shanghai 200093, China
| | - Liling Hao
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai Engineering Research Center of Food Rapid Detection, Shanghai 200093, China
| | - Fei Xu
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai Engineering Research Center of Food Rapid Detection, Shanghai 200093, China
| |
Collapse
|
6
|
Zhao Q, Gao Z, Liu X, Song X, Wu D, Ma H, Ren X, Li Y, Wei Q. Dual-Signal Integrated Aptasensor for Microcystin-LR Detection via In Situ Generation of Silver Nanoclusters Induced by Circular DNA Strand Displacement Reactions. Anal Chem 2023; 95:14317-14323. [PMID: 37695886 DOI: 10.1021/acs.analchem.3c02568] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2023]
Abstract
Inspired by the signal accumulation of circular DNA strand displacement reactions (CD-SDRs) and the in situ generation of silver nanoclusters (AgNCs) from signature template sequences, a dual-signal integrated aptasensor was designed for microcystin-LR (MC-LR) detection. The aptamer was programmed to be included in an enzyme-free CD-SDR, which utilized MC-LR as the primer and outputted the H1/H2 dsDNA in a continuous manner according to the ideal state. Ingeniously, H1/H2 dsDNA was enriched with signature template sequences, allowing in situ generation of AgNCs signal probes. To enhance the signal amplification performance, co-reaction acceleration strategies and CRISPR-Cas12a nucleases were invoked. The H1/H2 dsDNA could trigger the incidental cleavage performance of CRISPR-Cas12a nucleases: cis-cleavage reduced signature template sequences for the synthetic AgNCs, while trans-cleavage enabled fluorescence (FL) analysis. Meanwhile, AuPtAg was selected as the substrate material to facilitate the S2O82- reduction reaction for enhancing the electrochemiluminescence (ECL) basal signals. ECL and FL detection do not interfere with each other and have improved accuracy and sensitivity, with limits of detection of 0.011 and 0.023 pmol/L, respectively. This widens the path for designing dual-mode sensing strategies for signal amplification.
Collapse
Affiliation(s)
- Qinqin Zhao
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China
| | - Zhongfeng Gao
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China
| | - Xuejing Liu
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China
| | - Xianzhen Song
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China
| | - Dan Wu
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China
| | - Hongmin Ma
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China
| | - Xiang Ren
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China
| | - Yueyun Li
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, P. R. China
| | - Qin Wei
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China
| |
Collapse
|