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Zheng R, He B, Xie L, Yan H, Jiang L, Ren W, Suo Z, Xu Y, Wei M, Jin H. Molecular Recognition-Triggered Aptazyme Sensor Using a Co-MOF@MCA Hybrid Nanostructure as Signal Labels for Adenosine Triphosphate Detection in Food Samples. Anal Chem 2022; 94:12866-12874. [PMID: 36069149 DOI: 10.1021/acs.analchem.2c02916] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Developing rapid detection technology for adenosine triphosphate (ATP) is crucial in quality supervision and food safety. Herein, an electrochemical aptasensor based on an aptazyme-catalyzed signal amplification strategy is constructed for ATP detection using polyethyleneimine-functionalized molybdenum disulfide (PEI-MoS2)/Au@PtPd nanobipyramids (MoS2/Au@PtPd NBPs) as a modification material. Additionally, a novel kind of nitrogen-rich covalent organic framework (COF) is prepared using melamine and cyanuric acid (MCA). We synthesize MCA and the Co-based metal organic framework (Co-MOF) as the signal label. Due to the fact that π-π stacking interactions of Co-MOF@MCA can expand the load efficiency and surface concentration of the signal label, the signal response is an order of magnitude higher than that of Co-MOF or MCA as the signal label. Target ATP changes the conformation of the aptazyme, and it becomes activated. With the assistance of metal ions, the signal label is circularly cleaved, causing an amplification of the signal. Among them, MoS2/Au@PtPd NBPs have a large specific surface area and good electrical conductivity and can carry substantial DNA strands and amplify the redox signal of methylene blue (MB). Under optimal conditions, the aptasensor can detect ATP from 10 pM to 100 μM with a low limit of detection of 7.37 × 10-10 μM. Therefore, the novel aptasensor has extensive application prospects in quality supervision and food safety.
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Affiliation(s)
- Ruina Zheng
- School of Food Science and Technology, Henan University of Technology, Zhengzhou, Henan 450001, P. R. China
| | - Baoshan He
- School of Food Science and Technology, Henan University of Technology, Zhengzhou, Henan 450001, P. R. China
| | - Lingling Xie
- School of Environmental Engineering, Henan University of Technology, Zhengzhou, Henan 450001, P. R. China
| | - Haoyang Yan
- School of International Education, Henan University of Technology, Zhengzhou, Henan 450001, P. R. China
| | - Liying Jiang
- College of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou, Henan 450002, P. R. China
| | - Wenjie Ren
- School of Food Science and Technology, Henan University of Technology, Zhengzhou, Henan 450001, P. R. China
| | - Zhiguang Suo
- School of Food Science and Technology, Henan University of Technology, Zhengzhou, Henan 450001, P. R. China
| | - Yiwei Xu
- School of Food Science and Technology, Henan University of Technology, Zhengzhou, Henan 450001, P. R. China
| | - Min Wei
- School of Food Science and Technology, Henan University of Technology, Zhengzhou, Henan 450001, P. R. China
| | - Huali Jin
- School of Food Science and Technology, Henan University of Technology, Zhengzhou, Henan 450001, P. R. China
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Luminescent Aptamer-Based Bioassays for Sensitive Detection of Food Allergens. BIOSENSORS 2022; 12:bios12080644. [PMID: 36005040 PMCID: PMC9405952 DOI: 10.3390/bios12080644] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 08/11/2022] [Accepted: 08/12/2022] [Indexed: 02/06/2023]
Abstract
The presence of hidden allergens in food products, often due to unintended contamination along the food supply chain (production, transformation, processing, and transport), has raised the urgent need for rapid and reliable analytical methods for detecting trace levels of such species in food products. Indeed, food allergens represent a high-risk factor for allergic subjects due to potentially life-threatening adverse reactions. Portable biosensors based on immunoassays have already been developed as rapid, sensitive, selective, and low-cost analytical platforms that can replace analyses with traditional bench-top instrumentation. Recently, aptamers have attracted great interest as alternative biorecognition molecules for bioassays, since they can bind a variety of targets with high specificity and selectivity, and they enable the development of assays exploiting a variety of transduction and detection technologies. In particular, aptasensors based on luminescence detection have been proposed, taking advantage of the development of ultrasensitive tracers and enhancers. This review aims to summarize and discuss recent efforts in the field of food allergen analysis using aptamer-based bioassays with luminescence detection.
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Self-assembled DNA origami-based duplexed aptasensors combined with centrifugal filters for efficient and rechargeable ATP detection. Biosens Bioelectron 2022; 211:114336. [PMID: 35623250 DOI: 10.1016/j.bios.2022.114336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 04/08/2022] [Accepted: 04/29/2022] [Indexed: 11/22/2022]
Abstract
DNA origami technology has great potential for biosensor applications. Here, we described the construction of a self-assembled DNA origami biosensor for the precise localization of fluorescent aptamers. Due to the molecular weight difference between DNA origami and aptamer, centrifugal filters were used to quantitatively detect adenosine triphosphate (ATP). The ATP-specific aptamer labeled with fluorescence reporter 6-carboxyfluorescein FAM (FAM-aptamer) was selected as the recognition element and signal probe. ATP duplexed aptamers bound to triangular DNA origami by base-complementary pairing, resulting in high fluorescence signals on the origami arrays. The competitive binding of ATP toward the FAM-aptamer triggered the release of FAM-aptamer-ATP complexes from the surface of the origami array, resulting in weakened fluorescence signals. For ATP quantification, 100 kD centrifugal filters were employed, followed by measurement of the fluorescence signal trapped on the origami arrays of the filter device. The successful synthesis of origami-aptamer arrays was characterized by atomic force microscopy, laser confocal microscopy, and electrophoresis. Fluorescence measurements exhibited an excellent linear relationship with logarithms of ATP concentrations within 0.1-100 ng mL-1, with a detection limit of 0.29 ng mL-1. By replacing aptamers and complementary strands, we demonstrated the potential of this method for 17β-estradiol detection. Considering that the detection mechanism is based on the hybridization and displacement of DNA strands, the detection system had the potential for recharging. Our study provides new insights into applying DNA origami technology in small molecule detection.
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Zheng R, He B, Xie L, Li L, Yang J, Liu R, Ren W, Suo Z, Xu Y, Qu Z. Electrochemical Aptasensor Based on PEI‐rGO/AuNWs and Zr‐MOF for Determination of Adenosine Triphosphate via Exonuclease I‐assisted Target Recycling Strategy. ELECTROANAL 2021. [DOI: 10.1002/elan.202100460] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ruina Zheng
- School of Food Science and Technology Henan University of Technology Zhengzhou Henan 450001 PR China
| | - Baoshan He
- School of Food Science and Technology Henan University of Technology Zhengzhou Henan 450001 PR China
| | - Lingling Xie
- School of Environmental Engineering Henan University of Technology Zhengzhou Henan 450001 PR China
| | - Liping Li
- School of Environmental Engineering Henan University of Technology Zhengzhou Henan 450001 PR China
| | - Jinping Yang
- Henan Branch of China Grain Reserves Group Ltd. Company Zhengzhou Henan 450046 PR China
| | - Renli Liu
- Sinograin Zhengzhou Depot Ltd. Company Zhengzhou Henan 450066 PR China
| | - Wenjie Ren
- School of Food Science and Technology Henan University of Technology Zhengzhou Henan 450001 PR China
| | - Zhiguang Suo
- School of Food Science and Technology Henan University of Technology Zhengzhou Henan 450001 PR China
| | - Yiwei Xu
- School of Food Science and Technology Henan University of Technology Zhengzhou Henan 450001 PR China
| | - Zhenxi Qu
- Henan San Fang Yuan Tai Detection Technology Co. Ltd. Zhengzhou Henan 450001 PR China
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