1
|
Su R, Li Z, Yang C, Li Y, Wang J, Sun C. Fluorescent aptasensors for sensitive detection of lead ions based on structure-switching DNA beacon probe and exonuclease I-mediated signal amplification. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 320:124643. [PMID: 38901233 DOI: 10.1016/j.saa.2024.124643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 04/22/2024] [Accepted: 06/10/2024] [Indexed: 06/22/2024]
Abstract
Herein, two simple fluorescent signal-on sensing strategies for detecting lead ions (Pb2+) were established based on structure-switching aptamer probes and exonuclease-assisted signal amplification strategies. Two hairpin-structure fluorescent probes with blunt-ended stem arms were designed by extending the base sequence of Pb2+ aptamer (PS2.M) and labelling the probes with FAM (in probe 1) and 2-aminopurine (2-AP) (in probe 2), respectively. In method 1, graphene oxide (GO) was added to adsorb probe 1 and quench the fluorescence emission of FAM to achieve low fluorescent background. In method 2, fluorescent 2-AP molecule inserted into the double-stranded DNA of probe 2 was quenched as a result of base stacking interactions, leading to a simplified, quencher-free approach. The addition of Pb2+ can induce the probes to transform into G-quadruplex structures, exposing single DNA strands at the 3' end (the extended sequences). This exposure enables the activation of exonuclease I (Exo I) on the probes, leading to the cleavage effect and subsequent release of free bases and fluorophores, thereby resulting in amplified fluorescence signals. The two proposed methods exhibit good specificity and sensitivity, with detection limits of 0.327 nM and 0.049 nM Pb2+ for method 1 and method 2, respectively, and have been successfully applied to detect Pb2+ in river water and fish samples. Both detection methods employ the structure-switching aptamer probes and can be completed in two or three steps without the need for complex analytical instruments. Therefore, they have a broad prospect in the sensitive and simple detection of lead ion contamination in food and environmental samples.
Collapse
Affiliation(s)
- Ruifang Su
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Zhihong Li
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Chuanyu Yang
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Ying Li
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Junyang Wang
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun 130062, China.
| | - Chunyan Sun
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun 130062, China; Chongqing Research Institute, Jilin University, Chongqing 401123, China.
| |
Collapse
|
2
|
Wang B, Liu Z, Li Z, Xu N, Zhang X, Su R, Wang J, Jin R, Sun C. Facile and sensitive detection of mercury ions based on fluorescent structure-switching aptamer probe and exonuclease Ⅲ-assisted signal amplification. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 303:123223. [PMID: 37562208 DOI: 10.1016/j.saa.2023.123223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 07/24/2023] [Accepted: 07/31/2023] [Indexed: 08/12/2023]
Abstract
Hg2+ is highly toxic to human health and ecosystem. In this work, based on the unique fluorescent property of 2-Aminopurine (2-AP), the formation of T-Hg2+-T mismatch structure and the signal amplification of exonuclease III (Exo III) assisted target cycle, a fluorescent probe for facile and sensitive detection of Hg2+ is constructed. The hairpin-looped DNA probe is rationally designed with 2-AP embedded in the stem and thymine-rich recognition overhangs extended at the termini. The cleavage of the double stranded DNA stem with stable T-Hg2+-T pairs catalyzed by Exo III is prompted to happen upon recognition of trace Hg2+. Under the optimal reaction conditions, there is an excellent linear relationship between Hg2+ concentration and fluorescence intensity in the range of 7.5-200 nM with a detection limit of 0.38 nM. In addition, the detection results of Hg2+ in Songhua River water and fish samples are satisfactory. The fluorescent probe avoids labeling additional quenchers or quenching materials and has strong anti-interference ability. Thus, the fluorescent probe has a broad prospect in practical application.
Collapse
Affiliation(s)
- Boxu Wang
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Zheng Liu
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Zhihong Li
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Ningyi Xu
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Xuejiao Zhang
- Changchun Coordinated Administrative Law Enforcement Detachment of Market Regulation, Changchun 130102, China
| | - Ruifang Su
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Junyang Wang
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Rui Jin
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun 130062, China.
| | - Chunyan Sun
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun 130062, China.
| |
Collapse
|
3
|
Chen X, Huang C, Nie F, Hu M. Enzyme-free and sensitive method for single-stranded nucleic acid detection based on CHA and HCR. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:4243-4251. [PMID: 37592315 DOI: 10.1039/d3ay00975k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/19/2023]
Abstract
Simple, rapid, and highly sensitive methods for single-stranded nucleic acid detection are of great significance in clinical testing. Meanwhile, common methods are inseparable from the participation of enzymes, which greatly increases their complexity. Herein, an enzyme-free and sensitive method combining HCR and CHA is established to detect single-stranded nucleic acid. A target induces the auxiliary hairpin strands to open their secondary structure, exposing partial sequences that can trigger catalytic hairpin assembly (CHA) and hybridization chain reactions (HCR), respectively. To avoid additional signaling substances, 2-aminopurines (which fluoresces differently in double-stranded DNA and G-quadruplex) are modified in the substrate chains of CHA and HCR. Compared with methods that adopt CHA or HCR alone, the sensitivity of this method is increased by nearly 10 times. Moreover, this method can effectively improve the specific recognition of the target. To "turn on" the method, two regions that can pair with H5 and H6 are required. Taking foot-and-mouth disease virus (FMDV) as the object, this method can specifically detect FMDV to 2.78 × 101 TCID50. Although the sensitivity is not as good as RT-qPCR, it owns the advantages of simplicity and speed. We think this method can be used for the primary screening of FMDV, and has application potential in some grassroots.
Collapse
Affiliation(s)
- Xiaolong Chen
- Department of Geriatrics and Special Services Medicine, Xinqiao Hospital, Army Military Medical University, Chongqing 400037, China.
| | - Chaowang Huang
- Department of Geriatrics and Special Services Medicine, Xinqiao Hospital, Army Military Medical University, Chongqing 400037, China.
| | - Fuping Nie
- State Key Laboratory of Cattle Diseases Detection (Chongqing), Chongqing Customs Technology Center, Chongqing, 400020, P. R. China
| | - Mingdong Hu
- Department of Geriatrics and Special Services Medicine, Xinqiao Hospital, Army Military Medical University, Chongqing 400037, China.
- Department of Health Management, Xinqiao Hospital, Army Military Medical University, Chongqing 400037, China
| |
Collapse
|
4
|
Li Y, Liu K, Wang B, Liu Z, Yang C, Wang J, Ma X, Li H, Sun C. Engineering DNAzyme strategies for fluorescent detection of lead ions based on RNA cleavage-propelled signal amplification. JOURNAL OF HAZARDOUS MATERIALS 2022; 440:129712. [PMID: 35952430 DOI: 10.1016/j.jhazmat.2022.129712] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 07/21/2022] [Accepted: 08/02/2022] [Indexed: 05/07/2023]
Abstract
Based on the high recognition ability and flexible programmability of GR5 DNAzyme, two fluorescent biosensors were engineered for amplified detection of Pb2+ via incorporating Ti3C2TX MXenes and embedding 2-aminopurine (2-AP), respectively. The quencher-required approach relied on the DNA affinity and fluorescence quenching ability of Ti3C2TX MXenes. Benefiting from the low background signal modulated by Ti3C2TX MXenes, the sensitive determination of Pb2+ was achieved in the linear range of 0.2-10 ng mL-1 with the limit of detection (LOD) of 0.05 ng mL-1. The quencher-free approach combined the fluorescent trait of 2-AP embedded in DNA structure, and the RNA cleavage-propelled digestion process of Exonuclease I (Exo I) for signal amplification, indicating the sensitive detection of Pb2+ with the LOD as low as 0.02 ng mL-1 in the linear range of 0.1-10 ng mL-1. Both DNAzyme assays exhibited simple procedures, favorable specificity, rapid analysis, and satisfactory application in standard reference materials (lead in drinking water) and spiked water samples. The two fluorescent biosensors established in this work would not only provide theoretic fundament for DNA adsorption of Ti3C2TX MXenes and the design of 2-AP-embedded DNAzyme assays, but also hold a great potential for on-site monitoring of lead pollution in water samples.
Collapse
Affiliation(s)
- Ying Li
- Department of Food Quality and Safety, Jilin University, Changchun 130062, China
| | - Kai Liu
- Department of Food Quality and Safety, Jilin University, Changchun 130062, China
| | - Boxu Wang
- Department of Food Quality and Safety, Jilin University, Changchun 130062, China
| | - Zheng Liu
- Department of Food Quality and Safety, Jilin University, Changchun 130062, China
| | - Chuanyu Yang
- Department of Food Quality and Safety, Jilin University, Changchun 130062, China
| | - Junyang Wang
- Department of Food Quality and Safety, Jilin University, Changchun 130062, China
| | - Xinyue Ma
- Department of Food Quality and Safety, Jilin University, Changchun 130062, China
| | - Hongxia Li
- Department of Food Quality and Safety, Jilin University, Changchun 130062, China.
| | - Chunyan Sun
- Department of Food Quality and Safety, Jilin University, Changchun 130062, China.
| |
Collapse
|
5
|
Bai Y, Xu L, Chai H, Zhou L, Jiang G, Zhang G. Recent Advances on DNAzyme-Based Biosensors for Detection of Uranyl. Front Chem 2022; 10:882250. [PMID: 35572119 PMCID: PMC9091443 DOI: 10.3389/fchem.2022.882250] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 03/22/2022] [Indexed: 11/13/2022] Open
Abstract
Nuclear facilities are widely used in fields such as national defense, industry, scientific research, and medicine, which play a huge role in military and civilian use. However, in the process of widespread application of nuclear technology, uranium and its compounds with high carcinogenic and biologically toxic cause a lot of environmental problems, such as pollutions of water, atmosphere, soil, or ecosystem. Bioensors with sensitivity and specificity for the detection of uranium are highly demand. Nucleic acid enzymes (DNAzyme) with merits of high sensitivity and selectivity for targets as excellent molecular recognition elements are commonly used for uranium sensor development. In this perspective review, we summarize DNAzyme-based biosensors for the quantitative detection of uranyl ions by integrating with diverse signal outputting strategies, such as fluorescent, colorimetry, surface-enhanced Raman scattering, and electrochemistry. Different design methods, limit of detection, and practical applications are fully discussed. Finally, the challenges, potential solutions, and future prospects of such DNAzyme-based sensors are also presented.
Collapse
Affiliation(s)
- Yunlong Bai
- Beijing Research Institute of Chemical Engineering and Metallurgy, China National Nuclear Corporation, Beijing, China
| | - Lechang Xu
- Beijing Research Institute of Chemical Engineering and Metallurgy, China National Nuclear Corporation, Beijing, China
- *Correspondence: Lechang Xu, ; Guangyao Zhang,
| | - Huining Chai
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, China
| | - Lei Zhou
- Beijing Research Institute of Chemical Engineering and Metallurgy, China National Nuclear Corporation, Beijing, China
| | - Guoping Jiang
- Beijing Research Institute of Chemical Engineering and Metallurgy, China National Nuclear Corporation, Beijing, China
| | - Guangyao Zhang
- Intelligent Wearable Engineering Research Center of Qingdao, Research Center for Intelligent and Wearable Technology, College of Textiles and Clothing, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao, China
- *Correspondence: Lechang Xu, ; Guangyao Zhang,
| |
Collapse
|
6
|
Sun L, Liu J, Li L, Zhen D, Dai Z, Tang S, Zhu B, Chen L, Chen H, Gong M, Tang Z, Hu Y. Advances of biosensors for UO22+ detecting based on specific DNAzyme. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
7
|
Recent advances in the construction of functional nucleic acids with isothermal amplification for heavy metal ions sensor. Microchem J 2022. [DOI: 10.1016/j.microc.2021.107077] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
8
|
Li X, Yang H, He J, Yang B, Zhao Y, Wu P. Full liberation of 2-Aminopurine with nucleases digestion for highly sensitive biosensing. Biosens Bioelectron 2022; 196:113721. [PMID: 34673482 DOI: 10.1016/j.bios.2021.113721] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/09/2021] [Accepted: 10/15/2021] [Indexed: 02/05/2023]
Abstract
2-Aminopurine (2-AP), a fluorescent isomer of adenine, is a popular fluorescent tag for DNA-based biosensors. The fluorescence of 2-AP is highly dependent on its microenvironment, i.e., almost non-fluorescent and merely fluorescent in dsDNA and ssDNA, respectively, but can be greatly brightened as mononucleotide. In most 2-AP-based biosensors, DNA transformation from dsDNA to ssDNA was employed, while selective digestion of 2-AP-labeled DNA with nucleases represents an appealing approach for improving the biosensor sensitivity. However, some detailed fundamental information, such as the reason for nuclease digestion, the influence of the labeling site, neighboring bases, or the label number of 2-AP for final signal output, are still largely unknown, which greatly limits the utility of 2-AP-based biosensors. In this work, using both steady- and excited-state fluorescence (lifetime), we demonstrated that nuclease digestion resulted in almost full liberation of 2-AP mononucleotides, and was free from labeling site and neighboring bases. Furthermore, we also found that nuclease digestion could lead to multiplexed sensitivity from increasing number of 2-AP labelling, but was not achievable for the conventional biosensors without full liberation of 2-AP. Considering the popularity of 2-AP in biosensing and other related applications, the above obtained information in sensitivity boosting is fundamentally important for future design of 2-AP-based biosensors.
Collapse
Affiliation(s)
- Xianming Li
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Hang Yang
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Jialun He
- Analytical & Testing Center, Sichuan University, Chengdu, 610064, China
| | - Bin Yang
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, 610041, China.
| | - Yi Zhao
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Peng Wu
- Analytical & Testing Center, Sichuan University, Chengdu, 610064, China.
| |
Collapse
|
9
|
Zhang L, Shi S, Xiong P, Chen L, Xu J, Jiang J, Yang S, Wu H. DNAzyme recognition triggered cascade signal amplification for rapid and highly sensitive visual detection of uranyl ions. Analyst 2022; 147:4158-4166. [DOI: 10.1039/d2an01038k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A 40 min rapid and highly sensitive assay for visualized detection of UO22+ in water samples is reported. A dynamic range 1~50 nM and a LOD of 0.48 nM were obtained. Concentrations as low as 5 nM UO22+ could be distinguished by the naked eye.
Collapse
Affiliation(s)
- Ling Zhang
- Institute of Materials, China Academy of Engineering Physics, Mianyang, 621900, China
| | - Siwei Shi
- Institute of Materials, China Academy of Engineering Physics, Mianyang, 621900, China
| | - Penghui Xiong
- Institute of Materials, China Academy of Engineering Physics, Mianyang, 621900, China
| | - Lumin Chen
- Institute of Materials, China Academy of Engineering Physics, Mianyang, 621900, China
| | - Jie Xu
- Institute of Materials, China Academy of Engineering Physics, Mianyang, 621900, China
| | - Jiaolai Jiang
- Institute of Materials, China Academy of Engineering Physics, Mianyang, 621900, China
| | - Shanli Yang
- Institute of Materials, China Academy of Engineering Physics, Mianyang, 621900, China
| | - Haoxi Wu
- Institute of Materials, China Academy of Engineering Physics, Mianyang, 621900, China
| |
Collapse
|
10
|
Highly Sensitive and Selective Copper (II)-Catalyzed Dual-DNAzyme Colorimetric Biosensor Based on Exonuclease III-Mediated Cyclical Assembly. Catalysts 2021. [DOI: 10.3390/catal11111352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
“Cu-DNAzyme” and “G4-DNAzyme” were used to develop a “turn-off” dual-DNAzyme colorimetric biosensor, which could be used to detect Cu2+ by employing exonuclease III-mediated cyclical assembly (EMCA). EMCA was based on the cleavage activity of Cu2+ to transfer the linkage sequences of the substrate strand and enzyme strand into the transition sequence. The horseradish peroxidase (HRP)-mimicking activity of the G4-DNAzyme was lost after binding with the complementary transition sequence and was hydrolyzed by Exo III. These results demonstrate that the proposed colorimetric biosensor was an effective method for ultradetection of trace metals in a high original signal background. Due to the high sensitivity of the biosensor, the limit of detection (LOD) of Cu2+ is 0.16 nM. This design offers a general purpose platform that could be applied for the detection of any metal ion target through adjustment of metal-dependent DNA-cleaving DNAzymes, which is of great significance for the rapid determination of food safety.
Collapse
|
11
|
Lei M, Jia Y, Zhang W, Xie J, Xu Z, Wang Y, Du W, Liu W. Ultrasensitive and Selective Detection of Uranium by a Luminescent Terbium-Organic Framework. ACS APPLIED MATERIALS & INTERFACES 2021; 13:51086-51094. [PMID: 34694793 DOI: 10.1021/acsami.1c16742] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Detection and remediation of radioactive components have become the focus of worldwide research interest due to the ever-increasing generation of nuclear waste and the concerns on nuclear accidents. Among the numerous radionuclides, uranium and its isotopes receive the most attention because of their high proportion in nuclear waste and long half-life. Herein, a highly luminescent terbium-organic framework, formulated as [Tb4(C29O8H17)2(NO3)4(DMF)4(H2O)4]·4H2O·8.5DMF (YTU-100), with exceptional sensitivity and selectivity toward uranium was successfully prepared. The material exhibits fast adsorption kinetics and moderate sorption capacity. Interestingly, the luminescence intensity variation highly correlates to the amount of adsorbed uranium, which results in a quantitative, accurate, and selective uranium detection manner. The detection limits in deionized water and tap water were determined to be 1.07 and 0.75 ppb, respectively, which are lower than the US Environmental Protection Agency standard of the maximum contamination of uranium in drinking water. YTU-100 offers an alternative approach for building multifunctional MOFs used for simultaneous detection and removal of uranium from aqueous solutions.
Collapse
Affiliation(s)
- Min Lei
- School of Environmental and Material Engineering, Yantai University, Yantai 264005, China
| | - Yuyu Jia
- School of Environmental and Material Engineering, Yantai University, Yantai 264005, China
| | - Wei Zhang
- School of Environmental and Material Engineering, Yantai University, Yantai 264005, China
| | - Jian Xie
- School of Life Science, Shaoxing University, Huancheng West Road 508, Shaoxing 312000, China
| | - Zhijun Xu
- School of Environmental and Material Engineering, Yantai University, Yantai 264005, China
| | - Yanlong Wang
- School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, 199 Ren'ai Road, Suzhou 215123, China
| | - Wei Du
- School of Environmental and Material Engineering, Yantai University, Yantai 264005, China
| | - Wei Liu
- School of Environmental and Material Engineering, Yantai University, Yantai 264005, China
| |
Collapse
|
12
|
Hou Y, Jia B, Sheng P, Liao X, Shi L, Fang L, Zhou L, Kong W. Aptasensors for mycotoxins in foods: Recent advances and future trends. Compr Rev Food Sci Food Saf 2021; 21:2032-2073. [PMID: 34729895 DOI: 10.1111/1541-4337.12858] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 08/19/2021] [Accepted: 09/16/2021] [Indexed: 02/06/2023]
Abstract
Mycotoxin contamination in foods has posed serious threat to public health and raised worldwide concern. The development of simple, rapid, facile, and cost-effective methods for mycotoxin detection is of urgent need. Aptamer-based sensors, abbreviated as aptasensors, with excellent recognition capacity to a wide variety of mycotoxins have attracted ever-increasing interest of researchers because of their simple fabrication, rapid response, high sensitivity, low cost, and easy adaptability for in situ measurement. The past few decades have witnessed the rapid advances of aptasensors for mycotoxin detection in foods. Therefore, this review first summarizes the reported aptamer sequences specific for mycotoxins. Then, the recent 5-year advancements in various newly developed aptasensors, which, according to the signal output mode, are divided into electrochemical, optical and photoelectrochemical categories, for mycotoxin detection are comprehensively discussed. A special attention is taken on their strengths and limitations in real-world application. Finally, the current challenges and future perspectives for developing novel highly reliable aptasensors for mycotoxin detection are highlighted, which is expected to provide powerful references for their thorough research and extended applications. Owing to their unique advantages, aptasensors display a fascinating prospect in food field for safety inspection and risk assessment.
Collapse
Affiliation(s)
- Yujiao Hou
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,College of Traditional Chinese Medicine, Xinjiang Medical University, Urumqi, China.,Xinjiang Agricultural Vocational Technical College, Changji, China
| | - Boyu Jia
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ping Sheng
- College of Traditional Chinese Medicine, Xinjiang Medical University, Urumqi, China
| | - Xiaofang Liao
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Linchun Shi
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ling Fang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lidong Zhou
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Weijun Kong
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| |
Collapse
|
13
|
Yang Y, Yang H, Wan Y, Zhou W, Deng S, He Y, He G, Xie X, Deng R. Temperature-robust and ratiometric G-quadruplex proximate DNAzyme assay for robustly monitoring of uranium pollution and its microbial biosorbents screening. JOURNAL OF HAZARDOUS MATERIALS 2021; 413:125383. [PMID: 33609877 DOI: 10.1016/j.jhazmat.2021.125383] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 02/01/2021] [Accepted: 02/08/2021] [Indexed: 06/12/2023]
Abstract
Uranium pollution in environment and food chain is a serious threat to public security and human health. Herein, we proposed a temperature-robust, ratiometric, and label-free bioassay based on G-quadruplex proximate DNAzyme (G4DNAzyme), accommodating us to precisely monitor uranium pollution and biosorption. The proximity of split G-quadruplex probes was proposed to sense UO22+-activated DNAzyme activity, thus eliminating the use of chemically labeled nucleic acid probes. And the simultaneous monitoring of G-quadruplex and double-stranded structures of DNAzyme probes contributed to a ratiometric and robust detection of UO22+. Particularly, the separation of enzymatic digestion and fluorescence monitoring endued a robust and highly responsive detection of UO22+ upon the temperature of enzymatic digestion process ranged from 18° to 41 °C. Consequently, G4DNAzyme assay allowed a robust, label-free and ratiometric quantification of uranium. We demonstrated the feasibility of G4DNAzyme assay for estimating uranium pollution in water and aquatic product samples. Ultimately, G4DNAzyme assay was adopted to serve as the platform to screen bacterial species and conditions for uranium biosorption, promising its roles in uranium associated biosafety control.
Collapse
Affiliation(s)
- Yuchuan Yang
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, No. 64, Mianshan Road, Mianyang 621900, China
| | - Hao Yang
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Yi Wan
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Life and Pharmaceutical Sciences, Marine College, State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
| | - Wenhu Zhou
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410013, China
| | - Sha Deng
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Yao He
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, No. 64, Mianshan Road, Mianyang 621900, China
| | - Guiping He
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Xiang Xie
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, No. 64, Mianshan Road, Mianyang 621900, China
| | - Ruijie Deng
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China.
| |
Collapse
|
14
|
Ma X, wang C, Qin M, Tian X, Fan S, Zu H, Lyu M, Wang S. Rapid detection of Aeromonas hydrophila with a DNAzyme-based sensor. Food Control 2021. [DOI: 10.1016/j.foodcont.2020.107829] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
15
|
Chen Q, Wang C, Wang S, Zhou J, Wu Z. A responsive photonic crystal film sensor for the ultrasensitive detection of uranyl ions. Analyst 2020; 145:5624-5630. [PMID: 32638707 DOI: 10.1039/d0an00443j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
As an effective nuclear energy resource, uranium plays an important role in industry and energy but the wastes of uranium also cause radioactive contamination, which is harmful to the environment and the human body. Herein, a responsive photonic crystal (PC) film sensor for the ultrasensitive and label-free detection of uranyl ions (UO22+) has been proposed, which is easy to construct and does not need to be combined with a hydrogel. The PC film is not pH-sensitive because it is obtained by the self-assembly of methyl methacrylate-acrylonitrile co-polymeric nanospheres (PMMA-AN). These nanospheres were modified with amidoxime groups, which have a good coordination ability with UO22+. The bindings between nanospheres and UO22+ change the refractive index and disturb the face-centered cubic structure of the film, which leads to a decrease in the diffraction peak intensity of the PC film. The sensor works in the concentration range of 10 pM to 100 μM for UO22+ determination and the decreased intensities of the diffraction peaks are linearly correlated with the logarithm of UO22+ concentration in the range from 1 nM to 100 μM. Moreover, the sensor shows good selectivity for UO22+ and can also perform the determination of UO22+ in a real sample. The responsive PC film sensor shows great potential in the label-free and ultrasensitive detection of UO22+.
Collapse
Affiliation(s)
- Qianshan Chen
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China.
| | | | | | | | | |
Collapse
|
16
|
He Y, Yu Y, Wen X, Shi Y, Wu J, Guan Z, Cui M, Xiao C. A quencher-free 2-aminopurine modified hairpin aptasensor for ultrasensitive detection of Ochratoxin A. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 228:117780. [PMID: 31753651 DOI: 10.1016/j.saa.2019.117780] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 11/08/2019] [Accepted: 11/09/2019] [Indexed: 06/10/2023]
Abstract
A sensitive, efficient and quencher-free fluorescence aptasensor to detect Ochratoxin A (OTA) based on aptamer, 2-aminopurine (2AP) labeled Oligonucleotide sequence, as well as exonuclease I (Exo I) activity was developed. In which the aptamer specific to OTA was modified into a hairpin structure, and 8 bases at the 3' ends are exposed (H); also, 2AP is embedded in the oligonucleotide complementary to the 8 bases (2AP-probe).The detection principle based on 2AP-probe could be bonded to its complementary sequence and quenches the fluorescence of 2AP; The aptamer has a stronger affinity for the target than its complementary sequence; Exo I can dissociate single-stranded DNA and has little effect on double-stranded DNA as well as folded DNA. In the absence of OTA, the fluorescence of 2AP is quenched due to the complementary pairing of H and 2AP-probe; in the presence of OTA, H selective binding target is detached from 2AP-probe, and the fluorescence of 2AP is slightly restored. Moreover, when the Exo I is added to the detection system, 2AP-probe is dissociated by the Exo I to release the free 2AP, and the fluorescence of the system is further enhanced thereby realizing the detection of OTA. The detection limit of the aptasensor was low as 0.03 nM with a linear range of 0.5-100 nM. Moreover, the aptasensor has good selectivity and practicability and also has good potential in realizing the detection of toxic and harmful substances in food complex matrices.
Collapse
Affiliation(s)
- Yanhua He
- College of Food Science, Shanxi Normal University, Linfen 041004, PR China.
| | - Youwei Yu
- College of Food Science, Shanxi Normal University, Linfen 041004, PR China
| | - Xiaoye Wen
- Department of Chemistry, Shanxi Normal University, Linfen 041004, PR China
| | - Yan Shi
- College of Food Science, Shanxi Normal University, Linfen 041004, PR China
| | - Jianhu Wu
- College of Food Science, Shanxi Normal University, Linfen 041004, PR China
| | - Zhengping Guan
- College of Food Science, Shanxi Normal University, Linfen 041004, PR China
| | - Meilin Cui
- College of Food Science, Shanxi Normal University, Linfen 041004, PR China
| | - Chunling Xiao
- College of Food Science, Shanxi Normal University, Linfen 041004, PR China
| |
Collapse
|