1
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Zhang X, Li Z, Wang X, Hong L, Yin X, Zhang Y, Hu B, Zheng Q, Cao J. CRISPR/Cas12a integrated electrochemiluminescence biosensor for pufferfish authenticity detection based on NiCo 2O 4 NCs@Au as a coreaction accelerator. Food Chem 2024; 445:138781. [PMID: 38401312 DOI: 10.1016/j.foodchem.2024.138781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 02/01/2024] [Accepted: 02/15/2024] [Indexed: 02/26/2024]
Abstract
Meat adulteration has brought economic losses, health risks, and religious concerns, making it a pressing global issue. Herein, combining the high amplification efficiency of polymerase chain reaction (PCR) and the accurate recognition of CRISPR/Cas12, a sensitive and reliable electrochemiluminescence (ECL) biosensor was developed for the detection of pufferfish authenticity using NiCo2O4 NCs@Au-ABEI as nanoemitters. In the presence of target DNA, the trans-cleavage activity of CRISPR/Cas12a is activated upon specific recognition by crRNA, and then it cleaves dopamine-modified single stranded DNA (ssDNA-DA), triggering the ECL signal from the "off" to "on" state. However, without target DNA, the trans-cleavage activity of CRISPR/Cas12a is silenced. By rationally designing corresponding primers and crRNA, the biosensor was applied to specific identification of four species of pufferfish. Furthermore, as low as 0.1 % (w/w) adulterate pufferfish in mixture samples could be detected. Overall, this work provides a simple, low-cost and sensitive approach to trace pufferfish adulteration.
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Affiliation(s)
- Xiaobo Zhang
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, School of Life Sciences, Dalian Minzu University, Dalian 116600, China
| | - Zhiru Li
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, School of Life Sciences, Dalian Minzu University, Dalian 116600, China
| | - Xiuwen Wang
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, School of Life Sciences, Dalian Minzu University, Dalian 116600, China
| | - Lin Hong
- Dalian Inspection and Testing Certification Technical Service Center, Dalian 116021, China
| | - Xinying Yin
- College of Biomass Science and Engineering, Healthy Food Evaluation Research Center, Sichuan University, Chengdu 610065, Sichuan, China
| | - Yan Zhang
- Standards and Quality Center of National Food and Strategic Reserves Administration, Beijing 100834, China
| | - Bing Hu
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, School of Life Sciences, Dalian Minzu University, Dalian 116600, China
| | - Qiuyue Zheng
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, School of Life Sciences, Dalian Minzu University, Dalian 116600, China
| | - Jijuan Cao
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, School of Life Sciences, Dalian Minzu University, Dalian 116600, China.
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2
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Zhang C, Zhao X, Huang Z, Li Z, Hu J, Liu R, Lv Y. Highly sensitive detection of aflatoxin B1 by CRISPR/Cas12a-assisted single nanoparticle counting. Food Chem 2024; 443:138557. [PMID: 38280363 DOI: 10.1016/j.foodchem.2024.138557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 12/28/2023] [Accepted: 01/21/2024] [Indexed: 01/29/2024]
Abstract
CRISPR (clustered regularly interspaced short palindromic repeats) and CRISPR-associated protein (Cas) have gained extensive applications in bioassays. However, CRISPR-based detection platforms are often hampered by limited analytical sensitivity, while nucleic acid-based amplification strategies are usually indispensable for additional signal enhancement with potential risks of amplification leakages. To address these challenges, an amplification-free CRISPR-based bioassay of aflatoxin B1 (AFB1) was proposed by applying single nanoparticle counting. Single-particle mode inductively coupled plasma mass spectrometry (Sp-ICPMS) has been regarded as a sensitive tool for nanoparticle counting since one nanoparticle can generate considerable signals above backgrounds. With AFB1, activator strands were introduced to initiate the trans-cleavage of CRISPR/Cas12a for cutting the nanoparticles-tagged-magnetic beads, which were transduced to nanoparticle count signals after separation. Finally, a pico-mole level limit-of-detections (LODs) with moderate selectivity was achieved. Certified reference materials (CRMs) analysis and recovery tests were conducted with promising results. To our best knowledge, this is the first report of the single particle counting-based CRISPR/Cas12a biosensing study.
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Affiliation(s)
- Chengchao Zhang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, PR China
| | - Xin Zhao
- Department of Clinical Laboratory, Chengdu Seventh People's Hospital, Chengdu, Sichuan 610041, PR China
| | - Zili Huang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, PR China
| | - Ziyan Li
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610064, PR China
| | - Jianyu Hu
- Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, Alberta T6G 2G3, Canada
| | - Rui Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, PR China.
| | - Yi Lv
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, PR China; Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610064, PR China
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3
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Zhu L, Zhang X, Yang L, Qiu S, Liu G, Xiong X, Xiao T, Huang K, Zhu L. Label-free electrochemical sensing platform for sensitive detection of ampicillin by combining nucleic acid isothermal enzyme-free amplification circuits with CRISPR/Cas12a. Talanta 2024; 273:125950. [PMID: 38521024 DOI: 10.1016/j.talanta.2024.125950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 03/06/2024] [Accepted: 03/17/2024] [Indexed: 03/25/2024]
Abstract
The residue of ampicillin (AMP) in food and ecological environment poses a potential harm to human health. Therefore, a reliable system for detecting AMP is in great demand. Herein, a label-free and sensitive electrochemical sensor utilizing NH2-Co-MOF as an electrocatalytic active material for methylene blue (MB) was developed for rapid and facile AMP detection by combining hybridization chain reaction (HCR), catalytic hairpin assembly (CHA) with CRISPR/Cas12a. The surface of glassy carbon electrode modified with NH2-Co-MOF was able to undergo HCR independent of the AMP, forming long dsDNA complexes to load MB, resulting in strong original electrochemical signal. The presence of AMP could trigger upstream CHA circuit to activate the CRISPR/Cas12a system, thereby achieving rapid non-specific cleavage of the trigger ssDNA of HCR on the electrode surface, hindering the occurrence of HCR and reducing the load of MB. Significant signal change triggered by the target was ultimately obtained, thus achieving sensitive detection of the AMP with a detection limit as low as 1.60 pM (S/N = 3). The proposed sensor exhibited good stability, selectivity, and stability, and achieved reliable detection of AMP in milk and livestock wastewater samples, demonstrating its promising application prospects in food safety and environmental monitoring.
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Affiliation(s)
- Li Zhu
- Sichuan Provincial Engineering Laboratory of Livestock Manure Treatment and Recycling Sichuan Normal University, Key Laboratory of the Evaluation and Monitoring of Southwest Land Resources Ministry of Education, Sichuan Normal University, College of Chemistry and Materials Science, Chengdu, 610066, China
| | - Xuemei Zhang
- Sichuan Provincial Engineering Laboratory of Livestock Manure Treatment and Recycling Sichuan Normal University, Key Laboratory of the Evaluation and Monitoring of Southwest Land Resources Ministry of Education, Sichuan Normal University, College of Chemistry and Materials Science, Chengdu, 610066, China
| | - Li Yang
- Sichuan Provincial Engineering Laboratory of Livestock Manure Treatment and Recycling Sichuan Normal University, Key Laboratory of the Evaluation and Monitoring of Southwest Land Resources Ministry of Education, Sichuan Normal University, College of Chemistry and Materials Science, Chengdu, 610066, China
| | - Shan Qiu
- Sichuan Provincial Engineering Laboratory of Livestock Manure Treatment and Recycling Sichuan Normal University, Key Laboratory of the Evaluation and Monitoring of Southwest Land Resources Ministry of Education, Sichuan Normal University, College of Chemistry and Materials Science, Chengdu, 610066, China
| | - Guoyu Liu
- Sichuan Provincial Engineering Laboratory of Livestock Manure Treatment and Recycling Sichuan Normal University, Key Laboratory of the Evaluation and Monitoring of Southwest Land Resources Ministry of Education, Sichuan Normal University, College of Chemistry and Materials Science, Chengdu, 610066, China
| | - Xiaoli Xiong
- Sichuan Provincial Engineering Laboratory of Livestock Manure Treatment and Recycling Sichuan Normal University, Key Laboratory of the Evaluation and Monitoring of Southwest Land Resources Ministry of Education, Sichuan Normal University, College of Chemistry and Materials Science, Chengdu, 610066, China
| | - Ting Xiao
- Sichuan Provincial Engineering Laboratory of Livestock Manure Treatment and Recycling Sichuan Normal University, Key Laboratory of the Evaluation and Monitoring of Southwest Land Resources Ministry of Education, Sichuan Normal University, College of Chemistry and Materials Science, Chengdu, 610066, China
| | - Ke Huang
- Sichuan Provincial Engineering Laboratory of Livestock Manure Treatment and Recycling Sichuan Normal University, Key Laboratory of the Evaluation and Monitoring of Southwest Land Resources Ministry of Education, Sichuan Normal University, College of Chemistry and Materials Science, Chengdu, 610066, China.
| | - Liping Zhu
- Sichuan Provincial Engineering Laboratory of Livestock Manure Treatment and Recycling Sichuan Normal University, Key Laboratory of the Evaluation and Monitoring of Southwest Land Resources Ministry of Education, Sichuan Normal University, College of Chemistry and Materials Science, Chengdu, 610066, China.
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Peng J, Liu T, Guan L, Xu Z, Xiong T, Zhang Y, Song J, Liu X, Yang Y, Hao X. A highly sensitive Lock-Cas12a biosensor for detection and imaging of miRNA-21 in breast cancer cells. Talanta 2024; 273:125938. [PMID: 38503125 DOI: 10.1016/j.talanta.2024.125938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 03/13/2024] [Accepted: 03/15/2024] [Indexed: 03/21/2024]
Abstract
The expression levels of microRNA (miRNA) vary significantly in correlation with the occurrence and progression of cancer, making them valuable biomarkers for cancer diagnosis. However, their quantitative detection faces challenges due to the high sequence homology, low abundance and small size. In this work, we established a strand displacement amplification (SDA) approach based on miRNA-triggered structural "Lock" nucleic acid ("Lock" DNA), coupled with the CRISPR/Cas12a system, for detecting miRNA-21 in breast cancer cells. The "Lock" DNA freed the CRISPR-derived RNA (crRNA) from the dependence on the target sequence and greatly facilitated the extended detection of different miRNAs. Moreover, the CRISPR/Cas12a system provided excellent amplification ability and specificity. The designed biosensor achieved high sensitivity detection of miRNA-21 with a limit of detection (LOD) of 28.8 aM. In particular, the biosensor could distinguish breast cancer cells from other cancer cells through intracellular imaging. With its straightforward sequence design and ease of use, the Lock-Cas12a biosensor offers significant advantages for cell imaging and early clinical diagnosis.
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Affiliation(s)
- Jiawei Peng
- School of Public Health & Jiangxi Provincial Key Laboratory of Preventive Medicine, Jiangxi Medical College, Nanchang University, Nanchang, 330006, PR China
| | - Ting Liu
- School of Public Health & Jiangxi Provincial Key Laboratory of Preventive Medicine, Jiangxi Medical College, Nanchang University, Nanchang, 330006, PR China
| | - Liwen Guan
- School of Public Health & Jiangxi Provincial Key Laboratory of Preventive Medicine, Jiangxi Medical College, Nanchang University, Nanchang, 330006, PR China
| | - Ziyue Xu
- School of Public Health & Jiangxi Provincial Key Laboratory of Preventive Medicine, Jiangxi Medical College, Nanchang University, Nanchang, 330006, PR China
| | - Ting Xiong
- School of Public Health & Jiangxi Provincial Key Laboratory of Preventive Medicine, Jiangxi Medical College, Nanchang University, Nanchang, 330006, PR China
| | - Yu Zhang
- School of Public Health & Jiangxi Provincial Key Laboratory of Preventive Medicine, Jiangxi Medical College, Nanchang University, Nanchang, 330006, PR China
| | - Jiaxin Song
- School of Public Health & Jiangxi Provincial Key Laboratory of Preventive Medicine, Jiangxi Medical College, Nanchang University, Nanchang, 330006, PR China
| | - Xuexia Liu
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330088, PR China; School of Forensic Medicine, Wannan Medical College, Wuhu Anhui, 241002, PR China.
| | - Yifei Yang
- School of Public Health & Jiangxi Provincial Key Laboratory of Preventive Medicine, Jiangxi Medical College, Nanchang University, Nanchang, 330006, PR China.
| | - Xian Hao
- School of Public Health & Jiangxi Provincial Key Laboratory of Preventive Medicine, Jiangxi Medical College, Nanchang University, Nanchang, 330006, PR China.
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Li X, Ma Y, He M, Tan B, Wang G, Zhu G. A novel fluorescent aptasensor for sensitive and selective detection of environmental toxins fumonisin B1 based on enzyme-assisted dual recycling amplification and 2D δ-FeOOH-NH 2 nanosheets. Biosens Bioelectron 2024; 253:116183. [PMID: 38452570 DOI: 10.1016/j.bios.2024.116183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 02/23/2024] [Accepted: 02/29/2024] [Indexed: 03/09/2024]
Abstract
Fumonisin (FB) is a pervasive hazardous substance in the environment, presenting significant threats to human health and ecological systems. Thus, the selective and sensitive detection of fumonisin B1 (FB1) is crucial due to its high toxicity and wide distribution in corn, oats, and related products. In this work, we developed a novel and versatile fluorescent aptasensor by combining enzyme-assisted dual recycling amplification with 2D δ-FeOOH-NH2 nanosheets for the determination of FB1. The established CRISPR/Cas12a system was activated by using activator DNA (aDNA), which was released via a T7 exonuclease-assisted recycling reaction. Additionally, the activated Cas12a protein was utilized for non-specifically cleavage of the FAM-labeled single-stranded DNA (ssDNA-FAM) anchored on δ-FeOOH-NH2 nanosheets. The pre-quenched fluorescence signal was restored due to the desorption of the cleaved ssDNA-FAM. Due to the utilization of this T7 exonuclease-Cas12a-δ-FeOOH-NH2 aptasensor for signal amplification, the detection range of FB1 was expanded from 1 pg/mL to 100 ng/mL, with a limit of detection (LOD) as low as 0.45 pg/mL. This study not only provides novel insights into the development of fluorescence biosensors based on 2D nanomaterials combined with CRISPR/Cas12a, but also exhibits remarkable applicability in detecting other significant targets.
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Affiliation(s)
- Xiang Li
- School of Environment, Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Normal University, Xinxiang, Henan, 453007, China.
| | - Yunxiao Ma
- School of Environment, Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Normal University, Xinxiang, Henan, 453007, China
| | - Mengyuan He
- School of Environment, Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Normal University, Xinxiang, Henan, 453007, China
| | - Bing Tan
- School of Environment, Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Normal University, Xinxiang, Henan, 453007, China
| | - Gongke Wang
- School of Materials Science and Engineering, Henan Engineering Research Center of Design and Recycle for Advanced Electrochemical Energy Storage Materials, Henan Normal University, Xinxiang, Henan, 453007, China
| | - Guifen Zhu
- School of Environment, Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Normal University, Xinxiang, Henan, 453007, China
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6
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Li T, Wang J, Fang J, Chen F, Wu X, Wang L, Gao M, Zhang L, Li S. A universal nucleic acid detection platform combing CRISPR/Cas12a and strand displacement amplification with multiple signal readout. Talanta 2024; 273:125922. [PMID: 38503121 DOI: 10.1016/j.talanta.2024.125922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 02/08/2024] [Accepted: 03/13/2024] [Indexed: 03/21/2024]
Abstract
Rapid and sensitive detection of nucleic acids has become crucial in various fields. However, most current nucleic acid detection methods can only be used in specific scenarios, such as RT-qPCR, which relies on fluorometer for signal readout, limiting its application at home or in the field due to its high price. In this paper, a universal nucleic acid detection platform combing CRISPR/Cas12a and strand displacement amplification (CRISPR-SDA) with multiple signal readout was established to adapt to different application scenarios. Nucleocapsid protein gene of SARS-CoV-2 (N gene) and hepatitis B virus (HBV) DNA were selected as model targets. The proposed strategy achieved the sensitivity of 53.1 fM, 0.15 pM, and 1 pM for N gene in fluorescence mode, personal glucose meter (PGM) mode and lateral flow assay (LFA) mode, respectively. It possessed the ability to differentiate single-base mismatch and the presence of salmon sperm DNA with a mass up to 105-fold of the targets did not significantly interfere with the assay signal. The general and modular design idea made CRISPR-SDA as simple as building blocks to construct nucleic acid sensing methods to meet different requirements by simply changing the SDA template and selecting suitable signal report probes, which was expected to find a breadth of applications in nucleic acids detection.
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Affiliation(s)
- Tian Li
- College of Basic Medicine and Forensic Medicine, Henan University of Science and Technology, Luoyang, 471023, China.
| | - Jinjin Wang
- College of Basic Medicine and Forensic Medicine, Henan University of Science and Technology, Luoyang, 471023, China
| | - Jiaoyuan Fang
- College of Basic Medicine and Forensic Medicine, Henan University of Science and Technology, Luoyang, 471023, China
| | - Fei Chen
- College of Basic Medicine and Forensic Medicine, Henan University of Science and Technology, Luoyang, 471023, China
| | - Xinru Wu
- College of Basic Medicine and Forensic Medicine, Henan University of Science and Technology, Luoyang, 471023, China
| | - Lan Wang
- College of Basic Medicine and Forensic Medicine, Henan University of Science and Technology, Luoyang, 471023, China
| | - Meng Gao
- College of Basic Medicine and Forensic Medicine, Henan University of Science and Technology, Luoyang, 471023, China
| | - Liping Zhang
- College of Basic Medicine and Forensic Medicine, Henan University of Science and Technology, Luoyang, 471023, China.
| | - Sanqiang Li
- College of Basic Medicine and Forensic Medicine, Henan University of Science and Technology, Luoyang, 471023, China.
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Shi J, Lei C, Fan W, Sun Y, Liu C. Ultrasensitive protein and exosome analysis based on a rolling circle amplification assisted- CRISPR/Cas12a strategy. Talanta 2024; 273:125906. [PMID: 38490023 DOI: 10.1016/j.talanta.2024.125906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 01/15/2024] [Accepted: 03/09/2024] [Indexed: 03/17/2024]
Abstract
CRISPR/Cas12a system has attracted extensive concern in biosensing due to its high specificity and programmability. Nevertheless, existing Cas12a-based assays mainly focus on nucleic acid detection and have limitations in non-nucleic acid biomarker analysis. To broaden the application prospect of the CRISPR/Cas technology, a cascade Cas12a biosensing platform is reported by combining dual-functionalized gold nanoparticles (FGNPs)-assisted rolling circle amplification (RCA) and Cas12a trans-cleavage activity (GAR-Cas) for ultrasensitive protein and exosome analysis. FGNPs serve as a critical component in the transduction of protein or exosome recognition information into nucleic acid amplification events to produce Cas12a activators. In the GAR-Cas assay, by integrating the triple cascade amplification of FGNPs-assisted transduction, RCA, and Cas12a signal amplification, ultralow abundance of target molecules can arouse numerous concatemers to activate Cas12a trans-cleavage activity to release intense fluorescence, allowing the ultrasensitive detection of as low as 1 fg/mL (∼41 aM) cTnI and 5 exosomes per μL. Furthermore, the presented strategy can be applied to detect exosome levels from clinical samples, showing excellent performance in distinguishing cancer patients from healthy individuals. The GAR-Cas sensing platform exhibits great potential in clinical diagnosis and enlarges biosensing toolboxes based on CRISPR/Cas technology for non-nucleic acid target analysis.
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Affiliation(s)
- Jingjing Shi
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, Shaanxi Province, PR China
| | - Chao Lei
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, Shaanxi Province, PR China
| | - Wenjiao Fan
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, Shaanxi Province, PR China
| | - Yuanyuan Sun
- Department of Translational Medicine Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan Province, PR China.
| | - Chenghui Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, Shaanxi Province, PR China.
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Zhang X, Zhu L, Yang L, Liu G, Qiu S, Xiong X, Huang K, Xiao T, Zhu L. A sensitive and versatile electrochemical sensor based on hybridization chain reaction and CRISPR/Cas12a system for antibiotic detection. Anal Chim Acta 2024; 1304:342562. [PMID: 38637031 DOI: 10.1016/j.aca.2024.342562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 03/27/2024] [Accepted: 03/29/2024] [Indexed: 04/20/2024]
Abstract
A sensitive electrochemical platform was constructed with NH2-Cu-MOF as electrochemical probe to detect antibiotics using CRISPR/Cas12a system triggered by hybridization chain reaction (HCR). The sensing system consists of two HCR systems. HCR1 occurred on the electrode surface independent of the target, generating long dsDNA to connect signal probes and producing a strong electrochemical signal. HCR2 was triggered by target, and the resulting dsDNA products activated the CRISPR/Cas12a, thereby resulting in effective and rapid cleavage of the trigger of HCR1, hindering the occurrence of HCR1, and reducing the number of NH2-Cu-MOF on the electrode surface. Eventually, significant signal change depended on the target was obtained. On this basis and with the help of the programmability of DNA, kanamycin and ampicillin were sensitively detected with detection limits of 60 fM and 10 fM (S/N = 3), respectively. Furthermore, the sensing platform showed good detection performance in milk and livestock wastewater samples, demonstrating its great application prospects in the detection of antibiotics in food and environmental water samples.
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Affiliation(s)
- 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
| | - 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
| | - Guoyu Liu
- 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
| | - 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
| | - 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
| | - Ke Huang
- 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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9
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He W, Li X, Li X, Guo M, Zhang M, Hu R, Li M, Ding S, Yan Y. Split activator of CRISPR/Cas12a for direct and sensitive detection of microRNA. Anal Chim Acta 2024; 1303:342477. [PMID: 38609257 DOI: 10.1016/j.aca.2024.342477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 02/29/2024] [Accepted: 03/13/2024] [Indexed: 04/14/2024]
Abstract
CRISPR/Cas12a-based nucleic acid assays have been increasingly used for molecular diagnostics. However, most current CRISPR/Cas12a-based RNA assays require the conversion of RNA into DNA by preamplification strategies, which increases the complexity of detection. Here, we found certain chimeric DNA-RNA hybrid single strands could activate the trans-cleavage activity of Cas12a, and then discovered the activating effect of split ssDNA and RNA when they are present simultaneously. As proof of concept, split nucleic acid-activated Cas12a (SNA-Cas12a) strategy was developed for direct detection of miR-155. By adding a short ssDNA to the proximal end of the crRNA spacer sequence, we realized the direct detection of RNA targets using Cas12a. With the assistance of ssDNA, we extended the limitation that CRISPR/Cas12a cannot be activated by RNA targets. In addition, by taking advantage of the programmability of crRNA, the length of its binding to DNA and RNA was optimized to achieve the optimal efficiency in activating Cas12a. The SNA-Cas12a method enabled sensitive miR-155 detection at pM level. This method was simple, rapid, and specific. Thus, we proposed a new Cas12a-based RNA detection strategy that expanded the application of CRISPR/Cas12a.
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Affiliation(s)
- Wen He
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, PR China
| | - Xinyu Li
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, PR China
| | - Xinmin Li
- Chongqing Key Laboratory of Sichuan-Chongqing Co-construction for Diagnosis and Treatment of Infectious Diseases Integrated Traditional Chinese and Western Medicine, Chongqing Hospital of Traditional Chinese Medicine, Chongqing, 400021, PR China
| | - Minghui Guo
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, PR China
| | - Mengxuan Zhang
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, PR China
| | - Ruiwei Hu
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, PR China
| | - Menghan Li
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, PR China
| | - Shijia Ding
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, PR China
| | - Yurong Yan
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, PR China.
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10
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Kim H, Jang H, Song J, Lee SM, Lee S, Kwon HJ, Kim S, Kang T, Park HG. A CRISPR/Cas12 trans-cleavage reporter enabling label-free colorimetric detection of SARS-CoV-2 and its variants. Biosens Bioelectron 2024; 251:116102. [PMID: 38350240 DOI: 10.1016/j.bios.2024.116102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 01/17/2024] [Accepted: 02/03/2024] [Indexed: 02/15/2024]
Abstract
We present a label-free colorimetric CRISPR/Cas-based method enabling affordable molecular diagnostics for SARS-CoV-2. This technique utilizes 3,3'-diethylthiadicarbocyanine iodide (DISC2(5)) which exhibits a distinct color transition from purple to blue when it forms dimers by inserting into the duplex of the thymidine adenine (TA) repeat sequence. Loop-mediated isothermal amplification (LAMP) or recombinase polymerase amplification (RPA) was used to amplify target samples, which were subsequently subjected to the CRISPR/Cas12a system. The target amplicons would activate Cas12a to degrade nearby TA repeat sequences, preserving DISC2(5) in its free form to display purple as opposed to blue in the absence of the target. Based on this design approach, SARS-CoV-2 RNA was colorimetrically detected very sensitively down to 2 copies/μL, and delta and omicron variants of SARS-CoV-2 were also successfully identified. The practical diagnostic utility of this method was further validated by reliably identifying 179 clinical samples including 20 variant samples with 100% clinical sensitivity and specificity. This technique has the potential to become a promising CRISPR-based colorimetric platform for molecular diagnostics of a wide range of target pathogens.
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Affiliation(s)
- Hansol Kim
- Department of Chemical and Biomolecular Engineering (BK 21+ program), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea; Bionanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Hyowon Jang
- Bionanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Jayeon Song
- Bionanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Sang Mo Lee
- Department of Chemical and Biomolecular Engineering (BK 21+ program), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Seoyoung Lee
- Department of Chemical and Biomolecular Engineering (BK 21+ program), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Hyung-Jun Kwon
- Functional Biomaterial Research Center, KRIBB, 181 Ipsin-gil, Jeongeup, Jeollabuk-do, 56212, Republic of Korea
| | - Sunjoo Kim
- Department of Laboratory Medicine, Gyeongsang National University College of Medicine, 79 Gangnam-ro, Jinju, Gyeongsangnam-do, 52727, Republic of Korea
| | - Taejoon Kang
- Bionanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea; School of Pharmacy, Sungkyunkwan University (SKKU), 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, 16419, Republic of Korea.
| | - Hyun Gyu Park
- Department of Chemical and Biomolecular Engineering (BK 21+ program), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea.
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11
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Meng JN, Xu ZK, Li PR, Zeng X, Liu Y, Xu ZL, Wang J, Ding Y, Shen X. Universal and Naked-Eye Diagnostic Platform for Emetic Bacillus cereus Based on RPA-Assisted CRISPR/Cas12a. J Agric Food Chem 2024; 72:8823-8830. [PMID: 38578074 DOI: 10.1021/acs.jafc.3c06744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
Emetic Bacillus cereus (B. cereus), which can cause emetic food poisoning and in some cases even fulminant liver failure and death, has aroused widespread concern. Herein, a universal and naked-eye diagnostic platform for emetic B. cereus based on recombinase polymerase amplification (RPA)-assisted CRISPR/Cas12a was developed by targeting the cereulide synthetase biosynthetic gene (cesB). The diagnostic platform enabled one-pot detection by adding components at the bottom and cap of the tube separately. The visual limit of detection of RPA-CRISPR/Cas12a for gDNA and cells of emetic B. cereus was 10-2 ng μL-1 and 102 CFU mL-1, respectively. Meanwhile, it maintained the same sensitivity in the rice, milk, and cooked meat samples even if the gDNA was extracted by simple boiling. The whole detection process can be finished within 40 min, and the single cell of emetic B. cereus was able to be recognized through enrichment for 2-5 h. The good specificity, high sensitivity, rapidity, and simplicity of the RPA-assisted CRISPR/Cas12a diagnostic platform made it serve as a potential tool for the on-site detection of emetic B. cereus in food matrices. In addition, the RPA-assisted CRISPR/Cas12a assay is the first application in emetic B. cereus detection.
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Affiliation(s)
- Jing-Nan Meng
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China
- College of Food Engineering, Anhui Science and Technology University, Chuzhou 233100, China
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
| | - Ze-Ke Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Peng-Ru Li
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Xi Zeng
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China
- Guangzhou Institute of Food Inspection, Guangzhou 510410, China
| | - Yingju Liu
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
| | - Zhen-Lin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Juan Wang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Yu Ding
- Department of Food Science and Technology, Institute of Food Safety and Nutrition, Jinan University, Guangzhou 510632, China
| | - Xing Shen
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China
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12
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Yin X, Yang L, Sun X, Zheng Q, Piao Y, Hu B, Zhang X, Cao J. Development and validation of sensitive and rapid CRISPR/Cas12-based PCR method to detect hazelnut in unlabeled products. Food Chem 2024; 438:137952. [PMID: 38007952 DOI: 10.1016/j.foodchem.2023.137952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 10/30/2023] [Accepted: 11/06/2023] [Indexed: 11/28/2023]
Abstract
Hazelnut, one of the most popular tree nuts, is widely found in processed food and even very small amounts can trigger severe allergic reactions in susceptible people. Herein, we developed a sensitive and rapid method based on CRISPR and qPCR capable of detecting low-abundance hazelnut in processed food. The assay, known as CRISPR-based nucleic acid test method (Crinac) can detect 1 % of hazelnut in a mixture and allows the species to be identified in a complex processed sample. The detection process can be completed within 60 min. Contributed to amplification via PCR and CRISPR/Cas12a, enables end-fluorescence measurement for the quantification of hazelnut, thus reducing assay time and eliminating the need for costly real-time fluorescence PCR instruments. The assay based on CRISPR/Cas12 and PCR has potential as a sensitive and reliable analytical tool for the detection of food authenticity.
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Affiliation(s)
- Xinying Yin
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, Dalian Minzu University, Dalian 116600, China; College of Biomass Science and Engineering, Healthy Food Evaluation Research Center, Sichuan University, Chengdu 610065, Sichuan, China
| | - Lili Yang
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, Dalian Minzu University, Dalian 116600, China
| | - Xiuyan Sun
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, Dalian Minzu University, Dalian 116600, China
| | - Qiuyue Zheng
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, Dalian Minzu University, Dalian 116600, China
| | - Yongzhe Piao
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, Dalian Minzu University, Dalian 116600, China
| | - Bing Hu
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, Dalian Minzu University, Dalian 116600, China
| | - Xiaobo Zhang
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, Dalian Minzu University, Dalian 116600, China
| | - Jijuan Cao
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, Dalian Minzu University, Dalian 116600, China.
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13
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Hu H, Liu L, Wei XY, Duan JJ, Deng JY, Pei DS. Revolutionizing aquatic eco-environmental monitoring: Utilizing the RPA-Cas-FQ detection platform for zooplankton. Sci Total Environ 2024:172414. [PMID: 38631624 DOI: 10.1016/j.scitotenv.2024.172414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 03/15/2024] [Accepted: 04/10/2024] [Indexed: 04/19/2024]
Abstract
The integration of recombinase polymerase amplification (RPA) with CRISPR/Cas technology has revolutionized molecular diagnostics and pathogen detection due to its unparalleled sensitivity and trans-cleavage ability. However, its potential in the ecological and environmental monitoring scenarios for aquatic ecosystems remains largely unexplored, particularly in accurate qualitative/quantitative detection, and its actual performance in handling complex real environmental samples. Using zooplankton as a model, we have successfully optimized the RPA-CRISPR/Cas12a fluorescence detection platform (RPA-Cas-FQ), providing several crucial "technical tips". Our findings indicate the sensitivity of CRISPR/Cas12a alone is 5 × 109 copies/reaction, which can be dramatically increased to 5 copies/reaction when combined with RPA. The optimized RPA-Cas-FQ enables reliable qualitative and semi-quantitative detection within 50 min, and exhibits a good linear relationship between fluorescence intensity and DNA concentration (R2 = 0.956-0.974***). Additionally, we developed a rapid and straightforward identification procedure for single zooplankton by incorporating heat-lysis and DNA-barcode techniques. We evaluated the platform's effectiveness using real environmental DNA (eDNA) samples from the Three Gorges Reservoir, confirming its practicality. The eDNA-RPA-Cas-FQ demonstrated strong consistency (Kappa = 0.43***) with eDNA-Metabarcoding in detecting species presence/absence in the reservoir. Furthermore, the two semi-quantitative eDNA quantification technologies showed a strong positive correlation (R2 = 0.58-0.87***). This platform also has the potential to monitor environmental pollutants by selecting appropriate indicator species. The novel insights and methodologies presented in this study represent a significant advancement in meeting the complex needs of aquatic ecosystem protection and monitoring.
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Affiliation(s)
- Huan Hu
- Chongqing Jiaotong University, Chongqing 400074, China; Chongqing Institute of Green and Intelligent Technology, Chongqing School of University of Chinese Academy of Sciences, Chinese Academy of Sciences, Chongqing 400714, China
| | - Li Liu
- Key Laboratory of Engineering Biology for Low-Carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
| | - Xing-Yi Wei
- Chongqing Jiaotong University, Chongqing 400074, China; Chongqing Institute of Green and Intelligent Technology, Chongqing School of University of Chinese Academy of Sciences, Chinese Academy of Sciences, Chongqing 400714, China
| | - Jin-Jing Duan
- School of Public Health, Chongqing Medical University, Chongqing 400016, China
| | - Jiao-Yun Deng
- School of Public Health, Chongqing Medical University, Chongqing 400016, China
| | - De-Sheng Pei
- School of Public Health, Chongqing Medical University, Chongqing 400016, China.
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14
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Wang H, Hang X, Wang H, Peng J, Yu H, Wang L. Label/immobilization-free Cas12a-based electrochemiluminescence biosensor for sensitive DNA detection. Talanta 2024; 275:126114. [PMID: 38631265 DOI: 10.1016/j.talanta.2024.126114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 03/30/2024] [Accepted: 04/13/2024] [Indexed: 04/19/2024]
Abstract
Electrochemiluminescence (ECL) is one of the most sensitive techniques in the field of diagnostics. However, they typically require luminescent labeling and electrode surface biological modification, which is a time-consuming and laborious process involving multiple steps and may also lead to low reaction efficiency. Fabricating label/modification-free biosensors has become one of the most attractive parts for simplifying the ECL assays. In this work, the ECL luminophores carbon dots (CDs) were encapsulated in DNA hydrogel in situ by a simple rolling circle amplification (RCA) reaction. Upon binding of the target DNA, active Cas12a induces a collateral cleavage of the hydrogel's ssDNA backbone, resulting in a programmable degradation of the hydrogel and the release of CDs. By directly measuring the released CDs ECL, a simple and rapid label/modification-free detection of the target HPV-16 was realized. It is noted that this method allowed for 0.63 pM HPV-16 DNA detection without any amplification step, and it could take only ∼60 min for a fast test of a human serum sample. These results showed that our label/modification-free ECL biosensor has great potential for use in simple, rapid, and sensitive point-of-care (POC) detection.
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Affiliation(s)
- Honghong Wang
- School of Pharmacy, Jiangsu University, Zhenjiang, 212013, PR China
| | - Xiaomin Hang
- School of Pharmacy, Jiangsu University, Zhenjiang, 212013, PR China
| | - Huiyi Wang
- School of Pharmacy, Jiangsu University, Zhenjiang, 212013, PR China
| | - Jiaxin Peng
- School of Pharmacy, Jiangsu University, Zhenjiang, 212013, PR China
| | - Haoming Yu
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Li Wang
- School of Pharmacy, Jiangsu University, Zhenjiang, 212013, PR China.
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15
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Wang Y, Li K, Shen W, Huang X, Wu L. Point-of-care testing of methamphetamine and cocaine utilizing wearable sensors. Anal Biochem 2024:115526. [PMID: 38621604 DOI: 10.1016/j.ab.2024.115526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 03/23/2024] [Accepted: 03/26/2024] [Indexed: 04/17/2024]
Abstract
The imperative for the point-of-care testing of methamphetamine and cocaine in drug abuse prevention necessitates innovative solutions. To address this need, we have introduced a multi-channel wearable sensor harnessing CRISPR/Cas12a system. A CRISPR/Cas12a based system, integrated with aptamers specific to methamphetamine and cocaine, has been engineered. These aptamers function as signal-mediated intermediaries, converting methamphetamine and cocaine into nucleic acid signals, subsequently generating single-stranded DNA to activate the Cas12 protein. Additionally, we have integrated a microfluidic system and magnetic separation technology into the CRISPR system, enabling rapid and precise detection of cocaine and methamphetamine. The proposed sensing platform demonstrated exceptional sensitivity, achieving a detection limit as low as 0.1 ng/mL. This sensor is expected to be used for on-site drug detection in the future.
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Affiliation(s)
- Ying Wang
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210023, PR China
| | - Ke Li
- Center for Materials Synthetic Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, PR China
| | - Weijian Shen
- Animal, Plant and Food Inspection Center of Nanjing Customs District, Nanjing, 210000, PR China
| | - Xingxu Huang
- International Research Center of Synthetic Biology, Nanjing Normal University, Nanjing, 210023, PR China
| | - Lina Wu
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210023, PR China; Food Laboratory of Zhongyuan, Luohe, 462300, Henan, PR China.
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16
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Zhao L, Wang H, Chen X, Wang L, Abulaizi W, Yang Y, Li B, Wang C, Bai X. Agarose Hydrogel-Boosted One-Tube RPA- CRISPR/Cas12a Assay for Robust Point-of-Care Detection of Zoonotic Nematode Anisakis. J Agric Food Chem 2024; 72:8257-8268. [PMID: 38530904 DOI: 10.1021/acs.jafc.4c00204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
Rapid and accurate detection of the zoonotic nematode Anisakis is poised to control its epidemic. The clustered regularly interspaced short palindromic repeats (CRISPR)/Cas-associated assay shows great potential in the detection of pathogenic microorganisms. The one-tube method integrated the CRISPR system with the recombinase polymerase amplification (RPA) system to avoid the risk of aerosol pollution; however, it suffers from low sensitivity due to the incompatibility of the two systems and additional manual operations. Therefore, in the present study, the agarose hydrogel boosted one-tube RPA-CRISPR/Cas12a assay was constructed by adding the CRISPR system to the agarose hydrogel, which avoided the initially low amplification efficiency of RPA caused by the cleavage of Cas12a and achieved reaction continuity. The sensitivity was 10-fold higher than that of the one-tube RPA-CRISPR/Cas12a system. This method was used for Anisakis detection within 80 min from the sample to result, achieving point-of-care testing (POCT) through a smartphone and a portable device. This study provided a novel toolbox for POCT with significant application value in preventing Anisakis infection.
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Affiliation(s)
- Lianjing Zhao
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Haolu Wang
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Xiuqin Chen
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Liping Wang
- Jiashi County Hospitalof Uygur Medicine, Xinjiang Uyghur Autonomous Region 830057, China
| | - Wulamujiang Abulaizi
- Jiashi County Hospitalof Uygur Medicine, Xinjiang Uyghur Autonomous Region 830057, China
| | - Yaming Yang
- Yunnan Institute of Parasitic Diseases, Puer 665000, China
| | - Benfu Li
- Yunnan Institute of Parasitic Diseases, Puer 665000, China
| | - Cunzhou Wang
- Jiashi County Hospitalof Uygur Medicine, Xinjiang Uyghur Autonomous Region 830057, China
| | - Xue Bai
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun 130062, China
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17
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Li H, Qiao S, Zhang H, Qiao Y, Liu J, Li Y. Highly sensitive and selective demethylase FTO detection using a DNAzyme-mediated CRISPR/Cas12a signal cascade amplification electrochemiluminescence biosensor with C-CN/PCN V heterojunction as emitter. Biosens Bioelectron 2024; 256:116276. [PMID: 38599073 DOI: 10.1016/j.bios.2024.116276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 03/28/2024] [Accepted: 04/04/2024] [Indexed: 04/12/2024]
Abstract
Fat mass and obesity-associated protein (FTO) has gained attention as the first RNA N6-methyladenosine (m6A) modification eraser due to its overexpression being associated with various cancers. In this study, an electrochemiluminescence (ECL) biosensor for the detection of demethylase FTO was developed based on DNAzyme-mediated CRISPR/Cas12a signal cascade amplification system and carboxylated carbon nitride nanosheets/phosphorus-doped nitrogen-vacancy modified carbon nitride nanosheets (C-CN/PCNV) heterojunction as the emitter. The biosensor was constructed by modifying the C-CN/PCNV heterojunction and a ferrocene-tagged probe (ssDNA-Fc) on a glassy carbon electrode. The presence of FTO removes the m6A modification on the catalytic core of DNAzyme, restoring its cleavage activity and generating activator DNA. This activator DNA further activates the trans-cleavage ability of Cas12a, leading to the cleavage of the ssDNA-Fc and the recovery of the ECL signal. The C-CN/PCNV heterojunction prevents electrode passivation and improves the electron-hole recombination, resulting in significantly enhanced ECL signal. The biosensor demonstrates high sensitivity with a low detection limit of 0.63 pM in the range from 1.0 pM to 100 nM. Furthermore, the biosensor was successfully applied to detect FTO in cancer cell lysate and screen FTO inhibitors, showing great potential in early clinical diagnosis and drug discovery.
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Affiliation(s)
- Hong Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, 710069, PR China
| | - Shuai Qiao
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, 710069, PR China
| | - Heng Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, 710069, PR China
| | - Yanxia Qiao
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, 710069, PR China
| | - Jin Liu
- Shaanxi Key Laboratory of Catalysis, School of Chemistry and Environment Science, Shaanxi University of Technology, Hanzhong, Shaanxi, 723000, PR China.
| | - Yan Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, 710069, PR China.
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18
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Ding L, Cao S, Qu C, Wu Y, Yu S. Ratiometric CRISPR/Cas12a-Triggered CHA System Coupling with the MSRE to Detect Site-Specific DNA Methylation. ACS Sens 2024. [PMID: 38573977 DOI: 10.1021/acssensors.3c02571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
The precise determination of DNA methylation at specific sites is critical for the timely detection of cancer, as DNA methylation is closely associated with the initiation and progression of cancer. Herein, a novel ratiometric fluorescence method based on the methylation-sensitive restriction enzyme (MSRE), CRISPR/Cas12a, and catalytic hairpin assembly (CHA) amplification were developed to detect site-specific methylation with high sensitivity and specificity. In detail, AciI, one of the commonly used MSREs, was employed to distinguish the methylated target from nonmethylated targets. The CRISPR/Cas12a system was utilized to recognize the site-specific target. In this process, the protospacer adjacent motif and crRNA-dependent identification, the single-base resolution of Cas12a, can effectively ensure detection specificity. The trans-cleavage ability of Cas12a can convert one target into abundant activators and can then trigger the CHA reaction, leading to the accomplishment of cascaded signal amplification. Moreover, with the structural change of the hairpin probe during CHA, two labeled dyes can be spatially separated, generating a change of the Förster resonance energy transfer signal. In general, the proposed strategy of tandem CHA after the CRISPR/Cas12a reaction not only avoids the generation of false-positive signals caused by the target-similar nucleic acid but can also improve the sensitivity. The use of ratiometric fluorescence can eradicate environmental effects by self-calibration. Consequently, the proposed approach had a detection limit of 2.02 fM. This approach could distinguish between colorectal cancer and precancerous tissue, as well as between colorectal patients and healthy people. Therefore, the developed method can serve as an excellent site-specific methylation detection tool, which is promising for biological and disease studies.
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Affiliation(s)
- Lihua Ding
- College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Shengnan Cao
- College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Chenling Qu
- School of Food and Strategic Reserves, Henan University of Technology, Zhengzhou 450001, China
| | - Yongjun Wu
- College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Songcheng Yu
- College of Public Health, Zhengzhou University, Zhengzhou 450001, China
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19
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Zhu X, Zhang J, Pan R, Zhang K, Dai H. CRISPR/Cas12a-mediated entropy-driven electrochemical biosensor for detection of genetically modified maize Mon810. Anal Chim Acta 2024; 1296:342290. [PMID: 38401924 DOI: 10.1016/j.aca.2024.342290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Revised: 01/23/2024] [Accepted: 01/25/2024] [Indexed: 02/26/2024]
Abstract
Genetically modified crops (GMOs) have led to significant, if not revolutionary, agricultural advances. The development of GMOs requires necessary regulations, which depend on the detection of GMOs. A sensitive and specific biosensor for the detection of transgenic crops is crucial to improve the detection efficiency of GMOs. Here, we developed a CRISPR/Cas12a-mediated entropy-driven electrochemiluminescence (ECL) biosensor for the sensitive and specific detection of MON810, the world's most widely used transgenic insect-resistant maize. We designed two crRNAs to activate CRISPR/Cas12a, allowing it to cut non-specific single strands, and we modified the DNA tetrahedron (DT) on the surface of the gold electrode to diminish non-specific adsorption. The entropy-driven chain displacement reaction with the target DNA takes place for amplification. After optimization, the biosensor has satisfactory accuracy and selectivity, with a linear range of ECL of 1-106 fM and a limit of detection (LOD) of 3.3 fM by the 3σ method. The biosensor does not require polymerase chain reaction (PCR) amplification or complex sample processing, which dramatically improves transgenic crop detection efficiency. This new biosensor achieves rapid, sensitive, and highly specific detection of transgenic crops, and has great potential for large-scale field detection of transgenic crops.
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Affiliation(s)
- Xia Zhu
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, Zhejiang, China
| | - Jianfeng Zhang
- Beijing Life Science Academy, Changping, 102209, Beijing, China
| | - Ronghui Pan
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, Zhejiang, China
| | - Kai Zhang
- School of Chemistry and Materials Science, Nanjing University of Information Science and Technology. Nanjing, 210044, China.
| | - Huaxin Dai
- Beijing Life Science Academy, Changping, 102209, Beijing, China.
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20
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Zhao J, Han H, Liu Z, Chen J, Liu X, Sun Y, Wang B, Zhao B, Pang Y, Xiao R. Portable fluorescent lateral flow assay for ultrasensitive point-of-care analysis of acute myocardial infarction related microRNA. Anal Chim Acta 2024; 1295:342306. [PMID: 38355230 DOI: 10.1016/j.aca.2024.342306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 01/02/2024] [Accepted: 01/29/2024] [Indexed: 02/16/2024]
Abstract
Point-of-care quantitative analysis of tracing microRNA disease-biomarkers remains a great challenge in the clinical diagnosis. In this paper, we developed a portable fluorescent lateral flow assay for ultrasensitive quantified detection of acute myocardial infarction related microRNAs in bio-samples. SiO2@DQD (bilayer quantum dots assembly with SiO2 core) based fluorescent lateral flow strip was fabricated as the analysis tool. In order to quantify the tracing microRNA in biosamples, a catalytic hairpin assembly and CRISPR/Cas12a cascade amplification method was performed and combined with the fabricated SiO2@DQD lateral flow strip. Thus, our platform gathered double advantages of portability and ultrasensitive quantification. Based on our strips, target myocardial biomarker microRNA-133a can be detected with a detection limit of 0.32 fM, which was almost 1000-fold sensitive compared with previous reported microRNAs-lateral flow strips. Significantly, this portable fluorescent strip can directly detect microRNAs in serum without any pretreatment and PCR amplification steps. When spiked in serum samples, a recovery of 99.65 %-102.38 % can be obtained. Therefore, our method offers a potential tool for ultrasensitive quantification of diseases related microRNA in the point-of-care diseases diagnosis field.
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Affiliation(s)
- Junnan Zhao
- College of Life Science, Hebei Normal University, Shijiazhuang, 050024, PR China; State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, PR China
| | - Han Han
- College of Life Science, Hebei Normal University, Shijiazhuang, 050024, PR China; State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, PR China
| | - Zhenzhen Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, PR China
| | - Jin Chen
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, PR China
| | - Xiaoxian Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, PR China
| | - Yinuo Sun
- College of Life Science, Hebei Normal University, Shijiazhuang, 050024, PR China; State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, PR China
| | - Bingwei Wang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, PR China
| | - Baohua Zhao
- College of Life Science, Hebei Normal University, Shijiazhuang, 050024, PR China.
| | - Yuanfeng Pang
- Department of Toxicology, Capital Medical University, No. 10 Xitoutiao, You An Men, Beijing, 100069, PR China.
| | - Rui Xiao
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, PR China.
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21
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Li D, Liang P, Ling S, Wu Y, Lv B. An optimized microRNA detection platform based on PAM formation-regulated CRISPR/Cas12a activation. Int J Biol Macromol 2024; 266:130848. [PMID: 38521316 DOI: 10.1016/j.ijbiomac.2024.130848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 03/01/2024] [Accepted: 03/11/2024] [Indexed: 03/25/2024]
Abstract
MicroRNAs (miRNAs) have emerged as biomarkers for the diagnosis and prognosis of various diseases, such as cancer. Recent advancements in CRISPR/Cas12a-based biosensors in combination with hybridization chain reaction (HCR) make it a promising approach for miRNA detection. To increase the compatibility of HCR and CRISPR/Cas12a, we compared two design strategies of hairpin DNA in HCR. The results showed that different arrangements of the protospacer sequence and protospacer adjacent motif (PAM) in the hairpin DNA could affect the sensing performance. The "PAM Formation" strategy, by which the duplex PAM sites are absent in the hairpin DNA and present in the long duplex DNA after HCR, exhibited advantages in detection sensitivity. By optimizing the probe sequences and reaction conditions, we developed a miRNA detection platform. With the same crRNA, this platform enables the identification of different miRNAs by simply replacing the loop region of the target recognition probe. In addition, the proposed platform can detect single-stranded DNA and distinguishing single or multiple base mutations in the target strand. The application of discriminating the target miRNA expression levels from different cell lines validated the reliability and practicability of the sensor platform, indicating its potential applications in early clinical accurate diagnosis of cancers.
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Affiliation(s)
- Dawei Li
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of State Forestry and Grassland Administration on Subtropical Forest Biodiversity Conservation, College of Life Sciences, Nanjing Forestry University, Nanjing 210037, China
| | - Pengda Liang
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of State Forestry and Grassland Administration on Subtropical Forest Biodiversity Conservation, College of Life Sciences, Nanjing Forestry University, Nanjing 210037, China
| | - Shen Ling
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of State Forestry and Grassland Administration on Subtropical Forest Biodiversity Conservation, College of Life Sciences, Nanjing Forestry University, Nanjing 210037, China
| | - Yapeng Wu
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of State Forestry and Grassland Administration on Subtropical Forest Biodiversity Conservation, College of Life Sciences, Nanjing Forestry University, Nanjing 210037, China
| | - Bei Lv
- Key Lab of Innovative Applications of Bioresources and Functional Molecules of Jiangsu Province, College of Life Science and Chemistry, Jiangsu Second Normal University, Nanjing 210013, China.
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22
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Tian Z, Yan H, Zeng Y. Solid-Phase Extraction and Enhanced Amplification-Free Detection of Pathogens Integrated by Multifunctional CRISPR-Cas12a. ACS Appl Mater Interfaces 2024. [PMID: 38472096 DOI: 10.1021/acsami.3c17039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/14/2024]
Abstract
Public healthcare demands effective and pragmatic diagnostic tools to address the escalating challenges in infection management in resource-limited areas. Recent advances in clustered regularly interspaced short palindromic repeat (CRISPR)-based biosensing promise the development of next-generation tools for disease diagnostics, including point-of-care (POC) testing for infectious diseases. The currently prevailing strategy of developing CRISPR/Cas-based diagnostics exploits only the target identification and trans-cleavage activity of a CRISPR-Cas12a/Cas13a system to provide diagnostic results, and they need to be combined with an additional preamplification reaction to enhance sensitivity. In contrast to this dual-function strategy, here, we present a new approach that collaboratively integrates the triple functions of CRISPR-Cas12a: target identification, sequence-specific enrichment, and signal generation. With this approach, we develop a nucleic acid assay termed Solid-Phase Extraction and Enhanced Detection Assay integrated by CRISPR-Cas12a (SPEEDi-CRISPR) that negates the need for preamplification but significantly improves the detection of limit (LOD) from the pM to fM level. Specifically, using Cas12a-coated magnetic beads, this assay combines efficient solid-phase extraction and enrichment of DNA targets enabled by the sequence-specific affinity of CRISPR-Cas12a with fluorogenic detection by activated Cas12a on beads. SPEEDi-CRISPR, for the first time, leverages the possibility of employing CRISPR/Cas12a in nucleic acid extraction and integrates the ability of both enrichment and detection of CRISPR/Cas into a single platform. Our proof-of-concept studies revealed that the SPEEDi-CRISPR assay has great specificity to distinguish HPV-18 from HPV-16, and Parvovirus B19, in addition to being able to detect HPV-18 at a concentration as low as 2.3 fM in 100 min and 4.7 fM in 60 min. Furthermore, we proved that this assay can be coupled with two point-of-care testing strategies: the smartphone-based fluorescence detector and the lateral flow assay. Overall, these results suggested that our assay could pave a new way for developing CRISPR diagnostics.
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Affiliation(s)
- Zimu Tian
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - He Yan
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Yong Zeng
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, Florida 32611, United States
- University of Florida Health Cancer Center, Gainesville, Florida 32611, United States
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23
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Liu Y, Chao Z, Ding W, Fang T, Gu X, Xue M, Wang W, Han R, Sun W. A multiplex RPA- CRISPR/Cas12a-based POCT technique and its application in human papillomavirus (HPV) typing assay. Cell Mol Biol Lett 2024; 29:34. [PMID: 38459454 PMCID: PMC10921630 DOI: 10.1186/s11658-024-00548-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Accepted: 02/09/2024] [Indexed: 03/10/2024] Open
Abstract
Persistent infection with high-risk human papillomavirus (HR-HPV) is the primary and initiating factor for cervical cancer. With over 200 identified HPV types, including 14 high-risk types that integrate into the host cervical epithelial cell DNA, early determination of HPV infection type is crucial for effective risk stratification and management. Presently, on-site immediate testing during the HPV screening stage, known as Point of Care Testing (POCT), remains immature, severely limiting the scope and scenarios of HPV screening. This study, guided by the genomic sequence patterns of HPV, established a multiplex recombinase polymerase amplification (RPA) technology based on the concept of "universal primers." This approach achieved the multiple amplification of RPA, coupled with the CRISPR/Cas12a system serving as a medium for signal amplification and conversion. The study successfully constructed a POCT combined detection system, denoted as H-MRC12a (HPV-Multiple RPA-CRISPR/Cas12a), and applied it to high-risk HPV typing detection. The system accomplished the typing detection of six high-risk HPV types (16, 18, 31, 33, 35, and 45) can be completed within 40 min, and the entire process, from sample loading to result interpretation, can be accomplished within 45 min, with a detection depth reaching 1 copy/μL for each high-risk type. Validation of the H-MRC12a detection system's reproducibility and specificity was further conducted through QPCR on 34 clinical samples. Additionally, this study explored and optimized the multiplex RPA amplification system and CRISPR system at the molecular mechanism level. Furthermore, the primer design strategy developed in this study offers the potential to enhance the throughput of H-MRC12a detection while ensuring sensitivity, providing a novel research avenue for high-throughput detection in Point-of-Care molecular pathogen studies.
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Affiliation(s)
- Yan Liu
- Laboratory of Molecular Diagnostics, College of Pharmaceutical Sciences, Soochow University, Suzhou, 215000, Jiangsu, People's Republic of China
| | - Zhujun Chao
- Soochow University, Suzhou Medical College of Soochow University, Suzhou, 215000, Jiangsu, People's Republic of China
| | - Wei Ding
- Laboratory of Molecular Diagnostics, College of Pharmaceutical Sciences, Soochow University, Suzhou, 215000, Jiangsu, People's Republic of China
| | - Tanfeng Fang
- Laboratory of Molecular Diagnostics, College of Pharmaceutical Sciences, Soochow University, Suzhou, 215000, Jiangsu, People's Republic of China
| | - Xinxian Gu
- Dushu Lake Hospital, Affiliated to Soochow University, Dushu Lake Hospital Affiliated to Soochow University, Suzhou, 215004, Jiangsu, People's Republic of China.
| | - Man Xue
- Biological Products and Biochemical Drugs, Suzhou Institute for Food and Drug Control, Suzhou, 215101, Jiangsu, People's Republic of China
| | - Wei Wang
- Laboratory of Molecular Diagnostics, College of Pharmaceutical Sciences, Soochow University, Suzhou, 215000, Jiangsu, People's Republic of China
| | - Rong Han
- Laboratory of Molecular Diagnostics, College of Pharmaceutical Sciences, Soochow University, Suzhou, 215000, Jiangsu, People's Republic of China
| | - Wanping Sun
- Laboratory of Molecular Diagnostics, College of Pharmaceutical Sciences, Soochow University, Suzhou, 215000, Jiangsu, People's Republic of China.
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24
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Zhang F, Hao D, Liu R, Wang J, Sang Y, Wang S, Wang X. Preparation and recognition mechanism study of an scFv targeting chloramphenicol for a hybridization chain reaction- CRISPR/Cas12a amplified fluoroimmunoassay. Anal Chim Acta 2024; 1293:342283. [PMID: 38331551 DOI: 10.1016/j.aca.2024.342283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 01/15/2024] [Accepted: 01/22/2024] [Indexed: 02/10/2024]
Abstract
Recombinant antibody-based immunoassays have emerged as crucial techniques for detecting antibiotic residues in food samples. Developing a stable recombinant antibody production system and enhancing detection sensitivity are crucial for their biosensing applications. Here, we bioengineered a single-chain fragment variable (scFv) antibody to target chloramphenicol (CAP) using both Bacillus subtilis and HEK 293 systems, with the HEK 293-derived scFv demonstrating superior sensitivity. Computational chemistry analyses indicated that ASP-99 and ASN-102 residues in the scFv play key roles in antibody recognition, and the hydroxyl group near the benzene ring of the target molecule is critical for in antibody binding. Furthermore, we enhanced the scFv's biosensing sensitivity using an HCR-CRISPR/Cas12a amplification strategy in a streptavidin-based immunoassay. In the dual-step amplification process, detection limits for CAP in the HCR and HCR-CRISPR/Cas12a stages were significantly reduced to 55.23 pg/mL and 3.31 pg/mL, respectively. These findings introduce an effective method for developing CAP-specific scFv antibodies and also propose a multi-amplification strategy to increase immunoassay sensitivity. Additionally, theoretical studies also offer valuable guidance in CAP hapten design and genetic engineering for antibody modification.
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Affiliation(s)
- Fuyuan Zhang
- College of Food Science and Technology, Hebei Agricultural University, Baoding, 071001, China
| | - Dongyue Hao
- College of Food Science and Technology, Hebei Agricultural University, Baoding, 071001, China
| | - Ruobing Liu
- College of Food Science and Technology, Hebei Agricultural University, Baoding, 071001, China
| | - Juntao Wang
- College of Food Science and Technology, Hebei Agricultural University, Baoding, 071001, China
| | - Yaxin Sang
- College of Food Science and Technology, Hebei Agricultural University, Baoding, 071001, China
| | - Shuo Wang
- Medical College, Nankai University, Tianjin, 300500, China.
| | - Xianghong Wang
- College of Food Science and Technology, Hebei Agricultural University, Baoding, 071001, China.
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25
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Wang L, Li X, Li L, Cao L, Zhao Z, Huang T, Li J, Zhang X, Cao S, Zhang N, Wang X, Gong P. Establishment of an ultrasensitive and visual detection platform for Neospora caninum based-on the RPA- CRISPR/Cas12a system. Talanta 2024; 269:125413. [PMID: 38042139 DOI: 10.1016/j.talanta.2023.125413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 11/09/2023] [Accepted: 11/14/2023] [Indexed: 12/04/2023]
Abstract
Neospora caninum is a protozoan parasite that causes neosporosis in cattle, and leads to a high rate of abortion and severe financial losses. Rapid and accurate detection is particularly important for preventing and controlling neosporosis. In our research, a highly effective diagnostic technique based on the RPA-CRISPR/Cas system was created to successfully identify N. caninum against the Nc5 gene, fluorescent reporter system and the lateral flow strip (LFS) biosensor were exploited to display results. The specificity and sensitivity of the PRA-CRISPR/Cas12a assay were evaluated. We discovered that it was highly specific and did not react with any other pathogens. The limit of detection (LOD) for this technology was as low as one parasite per milliliter when employing the fluorescent reporter system, and was approximately ten parasites per milliliter based on the LFS biosensor and under blue or UV light. Meanwhile, the placental tissue samples were detected by our RPA-CRISPR/Cas12a detection platform were completely consistent with that of the nested PCR assay (59.4 %, 19/32). The canine feces were detected by our RPA-CRISPR/Cas12a detection platform were completely consistent with that of the nested PCR assay (8.6 %, 6/70). The RPA-CRISPR/Cas12a detection procedure was successfully finished in within 90 min and offers advantages of high sensitivity and specificity, speed and low cost. The technique was better suitable for extensive neosporosis screening in non-laboratory and resource-constrained locations. This study provided a new strategy for more rapid and portable identification of N. caninum.
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Affiliation(s)
- Li Wang
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China.
| | - Xin Li
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China.
| | - Lu Li
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China.
| | - Lili Cao
- Jilin Academy of Animal Husbandry and Veterinary Medicine, Changchun, 130062, China.
| | - Zhiteng Zhao
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China.
| | - Taojun Huang
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China.
| | - Jianhua Li
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China.
| | - Xichen Zhang
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China.
| | - Songgao Cao
- Pingdu People's Hospital, Qingdao, 266700, China.
| | - Nan Zhang
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China.
| | - Xiaocen Wang
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China.
| | - Pengtao Gong
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China.
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26
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Liu Z, Xu J, Huang S, Dai W, Zhang W, Li L, Xiao X, Wu T. Gene point mutation information translation and detection: Leveraging single base extension and CRISPR/Cas12a. Biosens Bioelectron 2024; 247:115936. [PMID: 38142668 DOI: 10.1016/j.bios.2023.115936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 11/30/2023] [Accepted: 12/15/2023] [Indexed: 12/26/2023]
Abstract
Gene point mutations play a significant role in the development of cancer. Therefore, developing a sensitive, specific, and universally applicable method for detecting gene point mutation is crucial for clinical diagnosis, prognosis, and cancer treatment. Recently, gene point mutation detection methods based on CRISPR/Cas12a detection have emerged. However, existing methods generally lack universality and specificity. In this study, we have developed a CRISPR/Cas12a-based method that combines improved allele-specific polymerase chain reaction and single base extension to translate the point mutation information in the target dsDNA into length information in ssDNA activators to overcome the limitations associated with PAM sequences in the CRISPR/Cas12a system. Our method achieved a detection limit of 0.002% for clinically significant EGFR T790M mutation. The CRISPR/Cas12a system we constructed demonstrates high sensitivity, specificity, and universality in detecting gene point mutations, making it a promising tool for clinical cancer screening.
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Affiliation(s)
- Zhujun Liu
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Jie Xu
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Shan Huang
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Wei Dai
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan, 430023, China
| | - Wei Zhang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Longjie Li
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan, 430023, China
| | - Xianjin Xiao
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Tongbo Wu
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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27
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Lin C, Zhou J, Gao N, Liu R, Li G, Wang J, Lu G, Shen J. Establishing a pulmonary aspergillus fumigatus infection diagnostic platform based on RPA-CRISPR-Cas12a. World J Microbiol Biotechnol 2024; 40:116. [PMID: 38418617 DOI: 10.1007/s11274-024-03940-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Accepted: 02/23/2024] [Indexed: 03/02/2024]
Abstract
In this study, we devised a diagnostic platform harnessing a combination of recombinase polymerase amplification (RPA) and the clustered regularly interspaced short palindromic repeats (CRISPR)/Cas12a system. Notably, this platform obviates the need for intricate equipment and finds utility in diverse settings. Two result display methods were incorporated in this investigation: the RPA-Cas12a-fluorescence method and the RPA-Cas12a-LFS (lateral flow strip). Upon validation, both display platforms exhibited no instances of cross-reactivity, with seven additional types of fungal pathogens responsible for respiratory infections. The established detection limit was ascertained to be as low as 102 copies/µL. In comparison to fluorescence quantitative PCR, the platform demonstrated a sensitivity of 96.7%, a specificity of 100%, and a consistency rate of 98.0%.This platform provides expeditious, precise, and on-site detection capabilities, thereby rendering it a pivotal diagnostic instrument amenable for deployment in primary healthcare facilities and point-of-care settings.
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Affiliation(s)
- Chunhui Lin
- Department of Clinical Laboratory, the First Affiliated Hospital of Anhui Medical University, Hefei, People's Republic of China
- Department of Clinical Laboratory, Anhui Public Health Clinical Center, Hefei, People's Republic of China
| | - Jing Zhou
- Department of Clinical Laboratory, the First Affiliated Hospital of Anhui Medical University, Hefei, People's Republic of China
- Department of Clinical Laboratory, Anhui Public Health Clinical Center, Hefei, People's Republic of China
| | - Nana Gao
- Department of Clinical Laboratory, the First Affiliated Hospital of Anhui Medical University, Hefei, People's Republic of China
- Department of Clinical Laboratory, Anhui Public Health Clinical Center, Hefei, People's Republic of China
| | - Runde Liu
- Department of Clinical Laboratory, the First Affiliated Hospital of Anhui Medical University, Hefei, People's Republic of China
- Department of Clinical Laboratory, Anhui Public Health Clinical Center, Hefei, People's Republic of China
| | - Ge Li
- Department of Clinical Laboratory, the First Affiliated Hospital of Anhui Medical University, Hefei, People's Republic of China
- Department of Clinical Laboratory, Anhui Public Health Clinical Center, Hefei, People's Republic of China
| | - Jinyu Wang
- Department of Clinical Laboratory, the First Affiliated Hospital of Anhui Medical University, Hefei, People's Republic of China
- Department of Clinical Laboratory, Anhui Public Health Clinical Center, Hefei, People's Republic of China
| | - Guoping Lu
- Department of Laboratory Medicine, Fuyang Hospital of Anhui Medical University, Fuyang, People's Republic of China
| | - Jilu Shen
- Department of Clinical Laboratory, the First Affiliated Hospital of Anhui Medical University, Hefei, People's Republic of China.
- Department of Clinical Laboratory, Anhui Public Health Clinical Center, Hefei, People's Republic of China.
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Yang R, Xie S, Zhou B, Guo M, Fan J, Su F, Ji Z, Chen Y, Li B. Postamplifying Cas12a Activation through Hybridization Chain Reaction-Triggered Fluorescent Nanocluster Formation for Ultrasensitive Nucleic Acid Detection. ACS Appl Mater Interfaces 2024; 16:9890-9899. [PMID: 38353672 DOI: 10.1021/acsami.3c18732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/01/2024]
Abstract
CRISPR/Cas12a-based biosensing is advancing rapidly; however, achieving sensitive and cost-effective reporting of Cas12a activation remains a challenge. In response, we have developed a label-free system capable of postamplifying Cas12a activation by integrating hybridization chain reaction (HCR) and DNA-copper nanoclusters (DNA-CuNCs). The trans-cleavage of Cas12a triggers a silenced HCR, leading to the in situ assembly of fluorescent DNA-CuNCs, allowing for the turn-on reporting of Cas12a activation. Without preamplification, this assay can detect DNA with a detection limit of 5 fM. Furthermore, when coupled with preamplification, the system achieves exceptional sensitivity, detecting the monkeypox virus (MPXV) plasmid at 1 copy in human serum. In a MPXV pseudovirus-based validation test, the obtained results are in agreement with those obtained by qPCR, reinforcing the robustness of this method. Our study represents the first effort to manipulate DNA-CuNC formation on HCR for highly sensitive and cost-effective reporting of Cas12a, resulting in an efficient synthetic biology-enabled sensing platform for biosafety applications.
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Affiliation(s)
- Runlin Yang
- NHC Key Laboratory of Nuclear Medicine, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi 214063, China
| | - Siying Xie
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, China
- School of Public Health, Xiamen University, Xiamen 361102, China
| | - Bin Zhou
- NHC Key Laboratory of Nuclear Medicine, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi 214063, China
| | - Mingming Guo
- NHC Key Laboratory of Nuclear Medicine, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi 214063, China
| | - Jun Fan
- NHC Key Laboratory of Nuclear Medicine, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi 214063, China
| | - Fengli Su
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, China
| | - Zhirun Ji
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, China
| | - Yue Chen
- Department of Fundamental and Community Nursing, School of Nursing, Nanjing Medical University, Nanjing 211166, China
| | - Bingzhi Li
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, China
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Ding S, Yuan Y, Dong J, Du F, Cui X, Shi Z, Tang Z. Leveraging CRISPR/Cas12 signal amplifier to sensitive detection of apurinic/apyrimidinic endonuclease 1 and high-throughput inhibitor screening. Anal Chim Acta 2024; 1291:342212. [PMID: 38280781 DOI: 10.1016/j.aca.2024.342212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 01/01/2024] [Accepted: 01/02/2024] [Indexed: 01/29/2024]
Abstract
As an essential protein in DNA repair, apurinic/apyrimidinic endonuclease 1 (APE1) plays multiple critical functions in maintaining homeostasis, making it a significant biomarker and therapeutic target for many disorders. Here, we describe a simple method to detect APE1 based on the Releasing-Extension-Signal amplification Test (REST) strategy that leverages the dsDNA as the activator to fully unlock the trans-cleavage activity of CRISPR/Cas12a. This assay provides a rapid and specific APE1 detection with a detection limit down to 1.05 × 10-5 U/mL. We also combined this method with an automated pipetting platform and a microplate reader for high-throughput screening of potential inhibitors of APE1. Besides, by changing the modification on the probe, the REST strategy was easily repurposed to detect various DNA glycosylases. Taken together, the simplicity and robustness of the method offer a new choice for APE1 detection and inhibitor screening, showing great potential in practical use. Furthermore, the REST strategy devised in this study provides a new example of applying CRISPR/Cas12a signal amplifier to non-nucleic acid biosensing and inhibitor screening, which broadens the CRISPR-Dx toolbox.
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Affiliation(s)
- Sheng Ding
- Clinical Medical College & Affiliated Hospital, Chengdu University, Chengdu, 610041, PR China
| | - Yi Yuan
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu, 610041, PR China
| | - Juan Dong
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu, 610041, PR China
| | - Feng Du
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu, 610041, PR China.
| | - Xin Cui
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu, 610041, PR China
| | - Zheng Shi
- Clinical Medical College & Affiliated Hospital, Chengdu University, Chengdu, 610041, PR China
| | - Zhuo Tang
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu, 610041, PR China.
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Wang S, Liu Y, Liu R, Xie L, Yang H, Ge S, Yu J. Strand displacement amplification triggered 3D DNA roller assisted CRISPR/Cas12a electrochemiluminescence cascaded signal amplification for sensitive detection of Ec-16S rDNA. Anal Chim Acta 2024; 1291:342213. [PMID: 38280789 DOI: 10.1016/j.aca.2024.342213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 01/01/2024] [Accepted: 01/02/2024] [Indexed: 01/29/2024]
Abstract
BACKGROUND Escherichia coli can cause gastrointestinal infection, urinary tract infection and other infectious diseases. Accurate detection of Escherichia coli 16S rDNA (Ec-16S rDNA) in clinical practice is of great significance for the identification and treatment of related diseases. At present, there are various types of sensors that can achieve accurate detection of Ec-16S rDNA. Electrochemiluminescence (ECL) has attracted considerable attention from researchers, which causes excellent performance in bioanalysis. Based on the previous research, it is significance to develop a novel, sensitive and efficient ECL biosensor. RESULTS In this work, an ECL biosensor for the detection of Ec-16S rDNA was constructed by integrating CRISPR/Cas12a technology with the cascade signal amplification strategy consisting of strand displacement amplification (SDA) and dual-particle three-dimensional (3D) DNA rollers. The amplification products of SDA triggered the operation of the DNA rollers, and the products generated by the DNA rollers activated CRISPR/Cas12a to cleave the signal probe, thereby realizing the change of the ECL signal. The cascade amplification strategy realized the exponential amplification of the target signal and greatly improved the sensitivity. Manganese dioxide nanoflowers (MnO2 NFs) as a co-reaction promoter effectively enhanced the ECL intensity of tin disulfide quantum dots (SnS2 QDs). A new ternary ECL system (SnS2 QDs/S2O82-/MnO2 NFs) was prepared, which made the change of ECL intensity of biosensor more significant. The proposed biosensor had a response range of 100 aM-10 nM and a detection limit of 27.29 aM (S/N = 3). SIGNIFICANCE AND NOVELTY Herein, the cascade signal amplification strategy formed by SDA and dual-particle 3D DNA rollers enabled the ECL biosensor to have high sensitivity and low detection limit. At the same time, the cascade signal amplification strategy was integrated with CRISPR/Cas12a to enable the biosensor to efficiently detect the target. It can provide a new idea for the detection of Ec-16S rDNA in disease diagnosis and clinical analysis.
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Affiliation(s)
- Shujing Wang
- Institute for Advanced Interdisciplinary Research(iAIR), University of Jinan, Jinan, 250022, PR China
| | - Yaqi Liu
- Institute for Advanced Interdisciplinary Research(iAIR), University of Jinan, Jinan, 250022, PR China
| | - Ruifang Liu
- Institute for Advanced Interdisciplinary Research(iAIR), University of Jinan, Jinan, 250022, PR China
| | - Li Xie
- Shandong Provincial Key Laboratory of Radiation Oncology, Cancer Research Center, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, 250117, PR China.
| | - Hongmei Yang
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, PR China
| | - Shenguang Ge
- Institute for Advanced Interdisciplinary Research(iAIR), University of Jinan, Jinan, 250022, PR China.
| | - Jinghua Yu
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, PR China
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Duan M, Zhao Y, Liu Y, He Y, Dai R, Chen J, Li X, Jia F. A low-background and wash-free signal amplification F-CRISPR biosensor for sensitive quantitative and visible qualitative detection of Salmonella Typhimurium. Sci Total Environ 2024; 912:168905. [PMID: 38016549 DOI: 10.1016/j.scitotenv.2023.168905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 11/19/2023] [Accepted: 11/24/2023] [Indexed: 11/30/2023]
Abstract
In traditional CRISPR-based biosensors, the cleavage-induced signal generation is insufficient because only a signals is generated at a CRISPR-induced cleavage. Herein, we developed an improved CRISPR/Cas12a-based biosensor with an enlarged signal generation which integrated the hybridization chain reaction (HCR) and low-background Förster Resonance Energy Transfer (FRET) signal output mode. The HCR with nucleic acid self-assembly capability was used as a signal carrier to load more signaling molecules. To get the best signal amplification, three different fluorescence signal output modes (fluorescence recovery, FRET and low-background FRET) generated by two fluoresceins, FAM and Cy5, were fully investigated and compared. The results indicated that the low-background FRET signal output mode with the strictest signal generation conditions yielded the highest signal-to-noise ratio (S/N) (19.17) and the most obvious fluorescence color change (from red to yellow). In optimal conditions, the proposed biosensor was successfully applied for Salmonella Typhimurium (S. Typhimurium) detection with 6 h (including 4 h for sample pre-treatment) from the initial target processing to the final detection result. The qualitative sensitivity, reliant on color changes, was 103 CFU/mL. The quantitative sensitivity, calculated by the fluorescence value, were 1.62 × 101 CFU/mL, 3.72 × 102 CFU/mL, and 8.71 × 102 CFU/mL in buffer solution, S. Typhimurium-spiked milk samples, and S.Typhimurium-spiked chicken samples, respectively. The excellent detection performance of the proposed biosensor endowed its great application potential in food and environment safety monitoring.
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Affiliation(s)
- Miaolin Duan
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Yijie Zhao
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Yana Liu
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Yawen He
- Department of Biological Systems Engineering, Virginia Tech, Blacksburg, VA 24061, USA
| | - Ruitong Dai
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Juhong Chen
- Department of Biological Systems Engineering, Virginia Tech, Blacksburg, VA 24061, USA
| | - Xingmin Li
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China.
| | - Fei Jia
- Department of Biological and Agricultural Engineering, University of Arkansas, Fayetteville, AR 72701, USA.
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Li W, Cai B, Chen R, Cui J, Wang H, Li Z. Application of recombinase polymerase amplification with CRISPR/Cas12a and multienzyme isothermal rapid amplification with lateral flow dipstick assay for Bactrocera correcta. Pest Manag Sci 2024. [PMID: 38375936 DOI: 10.1002/ps.8035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 01/13/2024] [Accepted: 02/20/2024] [Indexed: 02/21/2024]
Abstract
BACKGROUND Bactrocera correcta is a quarantine pest that negatively impacts the fruit and vegetable industry. Differentiating B. correcta from similar species, especially in non-adult stages, remains challenging. Rapid molecular identification techniques, such as recombinase polymerase amplification (RPA) combined with CRISPR/Cas12a and multienzyme isothermal rapid amplification with lateral flow dipstick (MIRA-LFD), play a crucial role in early monitoring and safeguarding agricultural production. Our study introduces two methods for the rapid visual identification of B. correcta. RESULTS Bactrocera correcta specific RPA primers, CRISPR RNA (crRNA), and the LFD probe were designed based on the cox1 genes. The RPA reaction conditions were optimized (at 37 °C for 8 min) for effective template DNA amplification. Two nucleic acid detection methods were established to visualize RPA. In the RPA-CRISPR/Cas12a system, the optimal LbCas12a/crRNA concentration ratio was 200:400 nmol L-1 . Successful amplification was determined by the presence or absence of green fluorescence following 15 min incubation at 37 °C. The MIRA-LFD system achieved precise identification of the target species within 4 min at 37 °C. Both methods exhibited high specificity and sensitivity, allowing for detection from 1.0 × 10-1 ng μL-1 of DNA. Combined with rapid DNA extraction, rapid identification of individual B. correcta at different developmental stages was achieved, enhancing the practicality and convenience of the established methods. CONCLUSION Our research findings demonstrate that both the RPA-CRISPR/Cas12a and MIRA-LFD methods for B. correcta detection was accurate and rapid (within 30 min and 10 min, respectively), at 37 °C. Our methods do not rely on expensive equipment, thus possess high practical value, providing improved identification solutions for port quarantine pests and field applications. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Weisong Li
- Key Laboratory of Surveillance and Management for Plant Quarantine Pests of MARA, Department of Plant Biosecurity, College of Plant Protection, China Agricultural University, Beijing, P. R. China
- Sanya Institute of China Agricultural University, Sanya, P. R. China
| | - Bo Cai
- Post-Entry Quarantine Station for Tropical Plant, Haikou Customs District, Haikou, P. R. China
| | - Ranran Chen
- National Agro-Tech Extension and Service Center, Beijing, P. R. China
| | - Jianchen Cui
- Beijing Plant Protection Station, Beijing, P. R. China
| | - Hui Wang
- Hainan Adminstration of Off-season Plant Breeding, Sanya, P. R. China
| | - Zhihong Li
- Key Laboratory of Surveillance and Management for Plant Quarantine Pests of MARA, Department of Plant Biosecurity, College of Plant Protection, China Agricultural University, Beijing, P. R. China
- Sanya Institute of China Agricultural University, Sanya, P. R. China
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Ye X, Bradley J, Gilbertson L. T-circle vector strategy increases NHEJ-mediated site-specific integration in soybean. Plant Biotechnol J 2024. [PMID: 38373114 DOI: 10.1111/pbi.14311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 01/07/2024] [Accepted: 02/02/2024] [Indexed: 02/21/2024]
Affiliation(s)
- Xudong Ye
- Bayer Crop Science, Chesterfield, Missouri, USA
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Hu X, Li J, Li YT, Zhang Y, Xiao MM, Zhang Z, Liu Y, Zhang ZY, Zhang GJ. Plug-and-play smart transistor bio-chips implementing point-of-care diagnosis of AMI with modified CRISPR/Cas12a system. Biosens Bioelectron 2024; 246:115909. [PMID: 38070238 DOI: 10.1016/j.bios.2023.115909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 12/01/2023] [Accepted: 12/01/2023] [Indexed: 12/30/2023]
Abstract
The point-of-care diagnosis of acute myocardial infarction (AMI), an extremely lethal disease with only a few hours of golden rescue time, is significant and urgently required. Here, we describe a plug-and-play carbon nanotube field effect transistor (CNT-FET) bio-chip supported with a smart portable readout for ultrasensitive and on-site testing of cardiac troponin I (cTnI), which is one of the most specific and valuable biomarkers of AMI. A modified clustered regularly interspaced short palindromic repeats (CRISPR)/Cas12a system, featuring the G-triplex structured reporter, was first combined with the CNT-FET to realize non-nucleic acid detection. Such a unique CNT-FET biosensor achieved the high sensitivity (LOD: 0.33 fg/mL), which is expected to give timely warning in the early stage of myocardial injury. In addition, a bilayer gate dielectric consisting of Y2O3/HfO2, employed into the passivation process, enabled the high environmental stability and repeatability of CNT-FET. More importantly, the homemade compact chip readout forged a field-deployable cTnI analytical tool, realizing "plasma-to-answer" performance for AMI patients in point-of-care testing scenarios. The developed technology holds promise to help doctors make clinical decisions faster, especially in remote areas.
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Affiliation(s)
- Xiao Hu
- School of Laboratory Medicine, Hubei University of Chinese Medicine, 16 Huangjia Lake West Road, Wuhan, 430065, PR China; Department of Pharmacy, Renmin Hospital, Hubei University of Medicine, Shiyan, 442000, Hubei, PR China
| | - Jiahao Li
- School of Laboratory Medicine, Hubei University of Chinese Medicine, 16 Huangjia Lake West Road, Wuhan, 430065, PR China
| | - Yu-Tao Li
- School of Laboratory Medicine, Hubei University of Chinese Medicine, 16 Huangjia Lake West Road, Wuhan, 430065, PR China
| | - Yulin Zhang
- School of Laboratory Medicine, Hubei University of Chinese Medicine, 16 Huangjia Lake West Road, Wuhan, 430065, PR China
| | - Meng-Meng Xiao
- Key Laboratory for the Physics and Chemistry of Nanodevices and Center for Carbon-based Electronics, School of Electronics, Peking University, Beijing, 100871, PR China; Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Hunan, 411105, PR China
| | - Zhenlu Zhang
- Wuhan Asia Heart Hospital, 753 Jinghan Avenue, Wuhan, 430022, PR China
| | - Yiwei Liu
- Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Hunan, 411105, PR China
| | - Zhi-Yong Zhang
- Key Laboratory for the Physics and Chemistry of Nanodevices and Center for Carbon-based Electronics, School of Electronics, Peking University, Beijing, 100871, PR China; Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Hunan, 411105, PR China
| | - Guo-Jun Zhang
- School of Laboratory Medicine, Hubei University of Chinese Medicine, 16 Huangjia Lake West Road, Wuhan, 430065, PR China.
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Fu X, Sun J, Yu B, Ye Y, Sheng L, Ji J, Zheng J, Fan M, Shao J, Sun X. Investigating enzyme kinetics and fluorescence sensing strategy of CRISPR/Cas12a for foodborne pathogenic bacteria. Anal Chim Acta 2024; 1290:342203. [PMID: 38246741 DOI: 10.1016/j.aca.2024.342203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 12/10/2023] [Accepted: 01/01/2024] [Indexed: 01/23/2024]
Abstract
Foodborne pathogenic bacteria are widespread in various foods, whose cross-contamination and re-contamination are critical influences on food safety. Rapid, accurate, and sensitive detection of foodborne pathogenic bacteria remains a topic of concern. CRISPR/Cas12a can recognize double-stranded DNA directly, showing great potential in nucleic acid detection. However, few studies have investigated the cleavage properties of CRISPR/Cas12a. In this study, the trans-cleavage properties of LbCas12a and AsCas12a were investigated to construct the detection methods for foodborne pathogenic bacteria. The highly sensitive fluorescent strategies for foodborne pathogens were constructed by analyzing the cleavage rates and properties of substrates at different substrate concentrations. Cas12a was activated in the presence of foodborne pathogenic target sequence was present, resulting in the cleavage of a single-stranded reporter ssDNA co-labelled by fluorescein quencher and fluorescein. The sensitivity and specificity of the Cas12a fluorescent strategy was investigated with Salmonella and Staphylococcus aureus as examples. The results showed that AsCas12a was slightly more capable of trans-cleavage than LbCas12a. The detection limits of AsCas12a for Salmonella and Staphylococcus aureus were 24.9 CFU mL-1 and 1.50 CFU mL-1, respectively. In all the seven bacteria, Staphylococcus aureus and Salmonella were accurately discriminated. The study provided a basis for constructing and improving the CRISPR/Cas12a fluorescence strategies. The AsCas12a-based detection strategy is expected to be a promising method for field detection.
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Affiliation(s)
- XuRan Fu
- School of Food Science and Technology, International Joint Laboratory on Food Safety, Synergetic Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu, 214122, PR China; Yixing Institute of Food and Biotechnology Co., Ltd, Yixing, 214200, PR China
| | - JiaDi Sun
- School of Food Science and Technology, International Joint Laboratory on Food Safety, Synergetic Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu, 214122, PR China; Yixing Institute of Food and Biotechnology Co., Ltd, Yixing, 214200, PR China.
| | - Bingqian Yu
- School of Food Science and Technology, International Joint Laboratory on Food Safety, Synergetic Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu, 214122, PR China
| | - Yongli Ye
- School of Food Science and Technology, International Joint Laboratory on Food Safety, Synergetic Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu, 214122, PR China; Yixing Institute of Food and Biotechnology Co., Ltd, Yixing, 214200, PR China
| | - Lina Sheng
- School of Food Science and Technology, International Joint Laboratory on Food Safety, Synergetic Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu, 214122, PR China; Yixing Institute of Food and Biotechnology Co., Ltd, Yixing, 214200, PR China
| | - Jian Ji
- School of Food Science and Technology, International Joint Laboratory on Food Safety, Synergetic Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu, 214122, PR China; Yixing Institute of Food and Biotechnology Co., Ltd, Yixing, 214200, PR China
| | - Jiayu Zheng
- Product Quality Comprehensive Inspection and Testing Center, Baoying, Jiangsu, 225800, PR China
| | - Minghong Fan
- Product Quality Comprehensive Inspection and Testing Center, Baoying, Jiangsu, 225800, PR China
| | - Jingdong Shao
- Comprehensive Technology Center of Zhangjiagang Customs, Zhangjiagang, Jiangsu, 215600, PR China
| | - XiuLan Sun
- School of Food Science and Technology, International Joint Laboratory on Food Safety, Synergetic Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu, 214122, PR China; Yixing Institute of Food and Biotechnology Co., Ltd, Yixing, 214200, PR China.
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Luo B, Zhou J, Zhan X, Ying B, Lan F, Wu Y. Smartphone-Based Free-to-Total Prostate Specific Antigen Ratio Detection System Using a Colorimetric Reaction Integrated with Proximity-Induced Bio-Barcode and CRISPR/Cas12a Assay. Small 2024:e2310212. [PMID: 38342699 DOI: 10.1002/smll.202310212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 01/24/2024] [Indexed: 02/13/2024]
Abstract
The free-to-total prostate-specific antigen (f/t-PSA) ratio is of great significance in the accurate diagnosis of prostate cancer. Herein, a smartphone-based detection system is reported using a colorimetric reaction integrated with proximity-induced bio-barcode and the clustered regularly interspaced short palindromic repeats (CRISPR)/Cas12a assay for f/t-PSA ratio detection. DNA/antibody recognition probes are designed to bind f-PSA or t-PSA and induce the release of the DNA bio-barcode. The CRISPR/Cas12a system is activated by the DNA bio-barcode to release Ag+ from the C-Ag+-C structure of the hairpin DNA. The released Ag+ is used to affect the tetramethylbenzidine (TMB)-H2O2-based colorimetric reaction catalyzed by Pt nanoparticles (NPs), as the peroxidase-like activity of the Pt NPs can be efficiently inhibited by Ag+. A smartphone with a self-developed app is used as an image reader and analyzer to analyze the colorimetric reaction and provide the results. A limit of detection of 0.06 and 0.04 ng mL-1 is achieved for t-PSA and f-PSA, respectively. The smartphone-based method showed a linear response between 0.1 and 100 ng mL-1 of t-PSA or f-PSA. In tests with clinical samples, the smartphone-based method successfully diagnosed prostate cancer patients from benign prostatic hyperplasia patients and healthy cases with high sensitivity and specificity.
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Affiliation(s)
- Bin Luo
- Analytical and Testing Center, Sichuan University, Chengdu, 610064, P. R. China
| | - Juan Zhou
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, P. R. China
| | - Xiaohui Zhan
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, P. R. China
| | - Binwu Ying
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, P. R. China
| | - Fang Lan
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, P. R. China
| | - Yao Wu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, P. R. China
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Wen J, Deng H, He D, Yuan Y. Dual-functional DNAzyme powered CRISPR-Cas12a sensor for ultrasensitive and high-throughput detection of Pb 2+ in freshwater. Sci Total Environ 2024; 911:168708. [PMID: 37992834 DOI: 10.1016/j.scitotenv.2023.168708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 11/17/2023] [Accepted: 11/17/2023] [Indexed: 11/24/2023]
Abstract
Freshwater lead pollution has posed severe threat to the environment and human health, underscoring the urgent necessity for accurate and user-friendly detection methods. Herein, we introduce a novel Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR-Cas) sensor for highly sensitive Pb2+ detection. To accomplish this, we designed a dual-functional deoxyribozyme (df-DNAzyme) probe that functions as an activator for the CRISPR-Cas12a system while also recognizing Pb2+. The df-DNAzyme probe was subsequently combined with gold nanoparticles (AuNPs) to fabricate a DNAzyme/AuNP nanoprobe, facilitating the activation of CRISPR-Cas12a in a one-to-multiple manner. Upon exposure to Pb2+, the df-DNAzyme is cleaved, causing disintegration of the DNAzyme/AuNP nanoprobe from magnetic beads. The degraded DNAzyme/AuNP containing multiple double-stranded DNA activators efficiently triggers CRISPR-Cas12a activity, initiating cleavage of fluorescence-quenched reporter DNA and generating amplified signals accordingly. The amplified fluorescence signal is accurately quantified using a quantitative polymerase chain reaction (qPCR) instrument capable of measuring 96 or 384 samples simultaneously at the microliter scale. This technique demonstrates ultra-sensitive detection capability for Pb2+ at concentrations as low as 1 pg/L within a range from 1 pg/L to 10 μg/L, surpassing limits set by World Health Organization (WHO) and United States Environmental Protection Agency (US EPA) guidelines. This study offers an ultrasensitive and high-throughput method for the detection of Pb2+ in freshwater, thereby advancing a novel approach towards the development of precise and convenient techniques for detecting harmful contaminants.
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Affiliation(s)
- Junlin Wen
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China.
| | - Hongjie Deng
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Daigui He
- Guangdong Mechanical & Electrical Polytechnic, Guangzhou 510550, China
| | - Yong Yuan
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China.
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Huang H, Li S, Han X, Zhang Y, Gao L, Wang X, Wang G, Chen Z. A rapid VEGF-gene-sequence photoluminescence detector for osteoarthritis. Front Bioeng Biotechnol 2024; 12:1338901. [PMID: 38380267 PMCID: PMC10878390 DOI: 10.3389/fbioe.2024.1338901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 01/15/2024] [Indexed: 02/22/2024] Open
Abstract
Osteoarthritis (OA) has become a serious problem to the human society for years due to its high economic burden, disability, pain, and severe impact on the patient's lifestyle. The importance of current clinical imaging modalities in the assessment of the onset and progression of OA is well recognized by clinicians, but these modalities can only detect OA in the II stage with significant structural deterioration and clinical symptoms. Blood vessel formation induced by vascular endothelial growth factor (VEGF) occurs in the early stage and throughout the entire course of OA, enables VEGF relating gene sequence to act as a biomarker in the field of early diagnosis and monitoring of the disease. Here in, a facile rapid detection of VEGF relating ssDNA sequence was developed, in which manganese-based zeolitic imidazolate framework nanoparticles (Mn-ZIF-NPs) were synthesized by a simple coprecipitation strategy, followed by the introduction and surficial absorption of probe ssDNAs and the CRISPR/Cas12a system components. Furthermore, fluorescence experiments demonstrated that the biosensor displayed a low detection limit of 2.49 nM, a good linear response to the target ssDNA ranging from 10 nM to 500 nM, and the ability of distinguishing single nucleotide polymorphism. This finding opens a new window for the feasible and rapid detection of ssDNA molecules for the early diagnose of OA.
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Affiliation(s)
- Hao Huang
- Department of Orthopaedics, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People’s Hospital, Guangzhou, China
| | - Shuang Li
- Department of Orthopaedics, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People’s Hospital, Guangzhou, China
| | - Xianjing Han
- Department of Orthopaedics, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People’s Hospital, Guangzhou, China
| | - Yule Zhang
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Collage of Physics and Optoelectronics Engineering, Shenzhen University, Shenzhen, China
| | - Lingfeng Gao
- College of Material Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Xiangjiang Wang
- Department of Orthopaedics, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People’s Hospital, Guangzhou, China
| | - Guiqing Wang
- Department of Orthopaedics, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People’s Hospital, Guangzhou, China
| | - Zhi Chen
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Collage of Physics and Optoelectronics Engineering, Shenzhen University, Shenzhen, China
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Gong T, Liao L, Jiang B, Yuan R, Xiang Y. Ag +-stabilized DNA triplex coupled with catalytic hairpin assembly and CRISPR/Cas12a amplifications for sensitive metallothionein assay. Talanta 2024; 268:125392. [PMID: 37948952 DOI: 10.1016/j.talanta.2023.125392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 10/31/2023] [Accepted: 11/02/2023] [Indexed: 11/12/2023]
Abstract
Metallothionein (MT) is a protein biomarker secreted by liver in response to the treatment for heavy metal toxicity and oncological diseases. On the basis of a new Ag+-stabilized DNA triplex probe (Ag+-SDTP), we establish a fluorescent biosensing system for high sensitivity detection of MT by combining catalytic hairpin assembly (CHA) and the CRISPR/Cas12a signal enhancements. The MT analyte complexes with Ag+ in Ag+-SDTP to disrupt the triplex structure and to release the ssDNA strands, which trigger subsequent CHA formation of many protospacer adjacent motif (PAM)-containing dsDNAs from two hairpins. Cas12a/crRNA further recognizes these PAM sequences to activate its trans-catalytic activity to cyclically cleave the fluorescently quenched ssDNA reporters to recovery drastically amplified fluorescence for detecting MT down to 0.34 nM within the dynamic range of 1∼800 nM. Moreover, the sensing method is able to selectively discriminate MT from other non-specific molecules and can realize low level detection of MT in diluted human serums, manifesting its potentiality for monitoring the disease-specific MT biomarker at trace levels.
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Affiliation(s)
- Tingting Gong
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, 400054, PR China
| | - Lei Liao
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, 400054, PR China
| | - Bingying Jiang
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, 400054, PR China.
| | - Ruo Yuan
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Yun Xiang
- 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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Chen X, Huang C, Zhang J, Hu Q, Wang D, You Q, Guo Y, Chen H, Xu J, Hu M. Mini crRNA-mediated CRISPR/Cas12a system (MCM-CRISPR/Cas12a) and its application in RNA detection. Talanta 2024; 268:125350. [PMID: 37922816 DOI: 10.1016/j.talanta.2023.125350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/21/2023] [Accepted: 10/25/2023] [Indexed: 11/07/2023]
Abstract
Some non-coding RNAs are abnormally expressed during the occurrence and development of diseases, so it is necessary to develop analytical methods that can specifically and sensitively detect them. In typical CRISPR/Cas12a system, a complete crRNA that can recognize single-stranded or double-stranded DNA is necessary to activate its trans-cleavage activity, which limits its direct application in RNA detection. Here, we prospectively find that slicing the facilitated crRNA in the typical CRISPR/Cas12a system at a fitted site did not affect its trans-cleavage activity, and a mini crRNA-mediated CRISPR/Cas12a system (MCM-CRISPR/Cas12a) was proposed based on this. This system can detect non-coding RNA to pM-level (10 pM for miRNA-21). To expand the application of this system, we combined it with HCR and CHA to establish a detection platform for non-coding RNA. The results show that the proposed method can specifically detect RNA to fM-level (2.5 fM for miRNA-21, 8.98 fM for miR-128-3p, and 81.6 fM for lncRNA PACER). The spiked recovery rates of miRNA-21, miR-128-3p, and lncRNA PACER in normal human serum were in range from 104.7 to 109.4 %, indicating the proposed method owns good applicability. In general, this MCM-CRISPR/Cas12a system further breaks the limitations of the typical CRISPR/Cas12a system that cannot be directly used for non-coding RNA detection. Besides, its combination with HCR and CHA achieves highly sensitive detection of non-coding RNA.
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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
| | - Jing Zhang
- Department of Geriatrics and Special Services Medicine, Xinqiao Hospital, Army Military Medical University, Chongqing, 400037, China
| | - Qiao Hu
- Department of Geriatrics and Special Services Medicine, Xinqiao Hospital, Army Military Medical University, Chongqing, 400037, China
| | - Dan Wang
- Department of Geriatrics and Special Services Medicine, Xinqiao Hospital, Army Military Medical University, Chongqing, 400037, China
| | - Qianyi You
- Department of Geriatrics and Special Services Medicine, Xinqiao Hospital, Army Military Medical University, Chongqing, 400037, China
| | - Yawen Guo
- Department of Geriatrics and Special Services Medicine, Xinqiao Hospital, Army Military Medical University, Chongqing, 400037, China
| | - Huaping Chen
- Department of Geriatrics and Special Services Medicine, Xinqiao Hospital, Army Military Medical University, Chongqing, 400037, China
| | - Jing Xu
- Department of Geriatrics and Special Services Medicine, Xinqiao Hospital, Army Military Medical University, Chongqing, 400037, 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.
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Yang WW, Zhao ML, Liu ML, Liang WB, Zhong X, Zhuo Y. Circular DNAzyme-Switched CRISPR/Cas12a Assay for Electrochemiluminescent Response of Demethylase Activity. ACS Sens 2024; 9:344-350. [PMID: 38198738 DOI: 10.1021/acssensors.3c02025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
DNA nanostructure provides powerful tools for DNA demethylase activity detection, but its stability has been significantly challenged. By virtue of circular DNA with resistance to exonuclease degradation, herein, the circular DNAzyme duplex with artificial methylated modification was constructed to identify the target and output the DNA activators to drive the CRISPR/Cas12a, constructing an "on-off-on" electrochemiluminescence (ECL) biosensor for monitoring the activity of the O6-methylguanine-DNA methyltransferase (MGMT). Specifically, the circular DNAzyme duplex consisted of the chimeric RNA-DNA substrate ring with double activator sequences and two single-stranded DNAzymes, whose catalytic domains were premodified with the methyl groups. When the MGMT was present, the methylated DNAzymes were repaired and restored the catalytic activity to cleave the chimeric RNA-DNA substrates, followed by the output of DNA activators to initiate the CRISPR/Cas12a. Subsequently, the ECL signals of silver nanoparticle-modified SnO2 nanospheres (Ag@SnO2) were recovered by releasing the ferrocene-labeled quenching probes (Fc-DNA) from the electrode surface because of the trans-cleavage activity of CRISPR/Cas12a, thus achieving the specific and sensitive ECL detection of MGMT from 2.5 × 10-4 to 2.5 × 102 ng/mL with a low limit (9.69 × 10-5 ng/mL). This strategy affords novel ideas and insights into research on how to project stable nucleic acid probes to detect DNA demethylases beyond traditional methods.
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Affiliation(s)
- Wei-Wei Yang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Mei-Ling Zhao
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Mei-Ling Liu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Wen-Bin Liang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Xia Zhong
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Ying Zhuo
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
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Yu Y, Li Q, Shi W, Yang Y, He H, Dai J, Mao G, Ma Y. Programmable Aptasensor for Regulating CRISPR/Cas12a Activity. ACS Sens 2024; 9:244-250. [PMID: 38085648 DOI: 10.1021/acssensors.3c01881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
CRISPR-mediated aptasensors have gained prevalence for detecting non-nucleic acid targets. However, there is an urgent need to develop an easily customizable design to improve the signal-to-noise ratio, enhance universality, and expand the detection range. In this article, we report a CRISPR-mediated programmable aptasensor (CPAS) platform. The platform includes single-stranded DNA comprising the aptamer sequence, locker DNA, and a crRNA recognition region, forming a hairpin structure through complementary hybridization. With T4 DNA polymerase, the crRNA recognition region was transformed into a complete double-stranded DNA through stem-loop extension, thereby activating the trans-cleavage activity of Cas 12a and generating fluorescence signals. The specific binding between the target molecule and aptamer disrupted the formation of the hairpin structure, altering the fluorescence signals. Notably, the CPAS platform allows for easy customization by simply changing the aptamer sequence and locker DNA, without entailing adjustments to the crRNA. The optimal number of bases in the locker DNA was determined to be seven nucleotides for the SARS-CoV-2 spike (S) protein and four nucleotides for ATP. The CPAS platform exhibited high sensitivity for S protein and ATP detection. Integration with a lateral flow assay enabled sensitive detection within 1 h, revealing its excellent potential for portable analysis.
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Affiliation(s)
- Yao Yu
- College of Chemistry & Pharmacy, Northwest A&F University Yangling, Shaanxi 712100, China
| | - Qiaoyu Li
- Shenzhen Key Laboratory of Synthetic Genomics, Guangdong Provincial Key Laboratory of Synthetic Genomics, CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Wen Shi
- College of Chemistry & Pharmacy, Northwest A&F University Yangling, Shaanxi 712100, China
- Shenzhen Key Laboratory of Synthetic Genomics, Guangdong Provincial Key Laboratory of Synthetic Genomics, CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Yuxin Yang
- Shenzhen Key Laboratory of Synthetic Genomics, Guangdong Provincial Key Laboratory of Synthetic Genomics, CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Hongpeng He
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Junbiao Dai
- Shenzhen Key Laboratory of Synthetic Genomics, Guangdong Provincial Key Laboratory of Synthetic Genomics, CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Key Laboratory of Synthetic Biology, Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518000, China
| | - Guobin Mao
- Shenzhen Key Laboratory of Synthetic Genomics, Guangdong Provincial Key Laboratory of Synthetic Genomics, CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Yingxin Ma
- Shenzhen Key Laboratory of Synthetic Genomics, Guangdong Provincial Key Laboratory of Synthetic Genomics, CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
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Wang X, Zheng D, Wang C, Xue D, Wang Q, Xia J. Harnessing intermolecular G-quadruplex-based spatial confinement effect for accelerated activation of CRISPR/Cas12a empowers ultra-sensitive detection of PML/RARA fusion genes. Anal Chim Acta 2024; 1287:342108. [PMID: 38182385 DOI: 10.1016/j.aca.2023.342108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 12/01/2023] [Accepted: 12/02/2023] [Indexed: 01/07/2024]
Abstract
Accurate detection and classification of the three isoforms of PML/RARA genomic fragments are crucial for predicting disease progression, stratifying risk, and administering precise drug therapies in acute promyelocytic leukemia (APL). In this study, we have developed a highly specific nucleic acid detection platform capable of quantifying the long isoform of the three main PML-RARA isoforms at a constant temperature. This platform integrates the strengths of the CRISPR/Cas12a nuclease-based method and the rolling circle amplification (RCA) technique. Notably, the RCA-assisted CRISPR/Cas12a trans-cleavage system incorporates a spatial confinement effect by utilizing intermolecular G-quadruplex structures. This innovative design effectively enhances the local concentration of CRISPR/Cas12a, thereby accelerating its cleaving efficiency towards reporter nucleic acids and enabling the detection of PML/RARA fusion gene expression through spectroscopy. The robust detection of PML/RARA fusion gene from human serum samples validates the reliability and potential of this platform in the screening, diagnosis, and prognosis of APL cases. Our findings present an approach that holds significant potential for the further development of the robust CRISPR/Cas sensor system, offering a rapid and adaptable paradigm for APL diagnosis.
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Affiliation(s)
- Xinrui Wang
- Medical Research Center, Fujian Maternity and Child Health Hospital, College of Clinical Medicine for Obstetrics and Gynecology and Pediatrics, Fujian Medical University, Fuzhou, Fujian, 350000, PR China; NHC Key Laboratory of Technical Evaluation of Fertility Regulation for Non-Human Primate (Fujian Maternity and Child Health Hospital), Fuzhou, Fujian, 350000, PR China.
| | - Dan Zheng
- School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang, Anhui, 236037, PR China
| | - Chengyi Wang
- Department of Hematology & Oncology, Fujian Children's Hospital (Fujian Branch of Shanghai Children's Medical Center), Fuzhou, Fujian, 350011, PR China
| | - Danni Xue
- School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang, Anhui, 236037, PR China
| | - Qi Wang
- School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang, Anhui, 236037, PR China
| | - Juan Xia
- School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang, Anhui, 236037, PR China.
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Liu R, Wang X, Wang S, Xie L, Zhao P, Li L, Ge S, Yu J. Rolling circle amplification assisted CRISPR/Cas12a dual-cleavage photoelectrochemical biosensor for highly sensitive detection of miRNA-21. Anal Chim Acta 2024; 1287:342125. [PMID: 38182395 DOI: 10.1016/j.aca.2023.342125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 12/04/2023] [Accepted: 12/07/2023] [Indexed: 01/07/2024]
Abstract
BACKGROUND MicroRNA-21 has been determined to be the only microRNA overexpressed in 11 types of solid tumors, making it an excellent candidate as a biomarker for disease diagnosis and therapy. Photoelectrochemical (PEC) biosensors have been widely used for quantification of microRNA-21. However, most PEC biosensing processes still suffer from some problems, such as the difficulty of avoiding the influence of interferents in complex matrices and the false-positive signals. There is a pressing need for establishing a sensitive and stable PEC method to detect microRNA-21. RESULTS Herein, a nicking endonuclease-mediated rolling circle amplification (RCA)-assisted CRISPR/Cas12a PEC biosensor was fabricated for ultrasensitive detection of microRNA-21. The p-p type heterojunction PbS QDs/Co3O4 polyhedra were prepared as the quencher, thus the initial PEC signal attained the "off" state. Furthermore, the target was specifically identified and amplified by the RCA process. Then, its product single-stranded DNA S1 activated the cis- and trans-cleavage abilities of CRISPR/Cas12a, leading to almost all of the PbS QDs/Co3O4 polyhedra to leave the electrode surface, the p-n semiconductor quenching effect to be disrupted, and the signal achieving the "super-on" state. This pattern of PEC signal changed from "off" to "on" eliminated the interference of false-positive signals. The proposed PEC biosensor presented a satisfactory linear relationship ranging from 1 fM to 10 nM with a detection limit of 0.76 fM (3 Sb/N). SIGNIFICANCE AND NOVELTY With innovatively synthesized PbS QDs/Co3O4 polyhedra as the effective quencher for PEC signal, the CRISPR/Cas12a dual-cleavage PEC biosensor possessed excellent selectivity, stability and repeatability. Furthermore, the detection of various miRNAs can be realized by changing the relevant base sequences in the constructed PEC biosensor. It also provides a powerful strategy for early clinical diagnosis and biomedical research.
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Affiliation(s)
- Ruifang Liu
- Institute for Advanced Interdisciplinary Research(iAIR), University of Jinan, Jinan, 250022, China
| | - Xuefeng Wang
- Institute for Advanced Interdisciplinary Research(iAIR), University of Jinan, Jinan, 250022, China
| | - Shujing Wang
- Institute for Advanced Interdisciplinary Research(iAIR), University of Jinan, Jinan, 250022, China
| | - Li Xie
- Shandong Provincial Key Laboratory of Radiation Oncology, Cancer Research Center, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, 250117, China.
| | - Peini Zhao
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, China
| | - Li Li
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, China
| | - Shenguang Ge
- Institute for Advanced Interdisciplinary Research(iAIR), University of Jinan, Jinan, 250022, China.
| | - Jinghua Yu
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, China
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Cao H, Mao K, Zhang H, Wu Q, Ju H, Feng X. Thermal stability and micrdose-based coupling CRISPR/Cas12a biosensor for amplification-free detection of hgcA gene in paddy soil. Sci Total Environ 2024; 909:168536. [PMID: 37977400 DOI: 10.1016/j.scitotenv.2023.168536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 10/21/2023] [Accepted: 11/10/2023] [Indexed: 11/19/2023]
Abstract
The lack of point-of-use (POU) methods hinders the utilization of the hgcA gene to rapidly evaluate methylmercury risks. CRISPR/Cas12a is a promising technology, but shortcomings such as low sensitivity, a strict reaction temperature and high background signal limit its further utilization. Here, a thermally stable microsystem-based CRISPR/Cas12a biosensor was constructed to achieve POU analysis for hgcA. First, three target gRNAs were designed to recognize hgcA. Then, a microsystem was developed to eliminate the background signal. Next, the effect of temperature on the activity of the Cas12a-gRNA complex was explored and its thermal stability was discovered. After that, coupling gRNA assay was introduced to improve sensitivity, exhibiting a limit of detection as low as 0.49 pM with a linear range of 0.98-125 pM, and a recovery rate between 90 and 110 % for hgcA. The biosensor was finally utilized to assess hgcA abundance in paddy soil, and high abundance of hgcA was found in these paddy soil samples. This study not only systematically explored the influence of temperature and microsystem on CRISPR/Cas12a, providing vital references for other novel CRISPR-based detection methods, but also applied the CRISPR-based analytical method to the field of environmental geochemistry for the first time, demonstrating enormous potential for POU detection in this field.
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Affiliation(s)
- Haorui Cao
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Kang Mao
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China.
| | - Hua Zhang
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China.
| | - Qingqing Wu
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Xinbin Feng
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
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Yang Y, Gong F, Shan X, Tan Z, Zhou F, Ji X, Xiang M, Wang F, He Z. Amplification-free detection of Mpox virus DNA using Cas12a and multiple crRNAs. Mikrochim Acta 2024; 191:102. [PMID: 38231433 DOI: 10.1007/s00604-024-06184-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 01/01/2024] [Indexed: 01/18/2024]
Abstract
Mpox virus (MPXV) is a zoonotic DNA virus that caused human Mpox, leading to the 2022 global outbreak. MPXV infections can cause a number of clinical syndromes, which increases public health threats. Therefore, it is necessary to develop an effective and reliable method for infection prevention and control of epidemic. Here, a Cas12a-based direct detection assay for MPXV DNA is established without the need for amplification. By targeting the envelope protein gene (B6R) of MPXV, four CRISPR RNAs (crRNAs) are designed. When MPXV DNA is introduced, every Cas12a/crRNA complex can target a different site of the same MPXV gene. Concomitantly, the trans-cleavage activity of Cas12a is triggered to cleave the DNA reporter probes, releasing a fluorescence signal. Due to the application of multiple crRNAs, the amount of active Cas12a increases. Thus, more DNA reporter probes are cleaved. As a consequence, the detection signals are accumulated, which improves the limit of detection (LOD) and the detection speed. The LOD of the multiple crRNA system can be improved to ~ 0.16 pM, which is a decrease of the LOD by approximately ~ 27 times compared with the individual crRNA reactions. Furthermore, using multiple crRNAs increases the specificity of the assay. Given the outstanding performance, this assay has great potential for Mpox diagnosis.
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Affiliation(s)
- Yixia Yang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China
- Guangxi Key Laboratory of Special Biomedicine, School of Medicine, Guangxi University, Nanning, 530004, China
| | - Feng Gong
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China
| | - Xiaoyun Shan
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China
| | - Zhiyou Tan
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China
| | - Fuxiang Zhou
- Department of Radiation and Medical Oncology, Hubei Key Laboratory of Tumor Biological Behaviors, and Hubei Cancer Clinical Study Center, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China
| | - Xinghu Ji
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China.
| | - Ming Xiang
- Wuhan Research Center for Infectious Diseases and Cancer, Chinese Academy of Medical Sciences, Wuhan, 430071, China
| | - Fubing Wang
- Wuhan Research Center for Infectious Diseases and Cancer, Chinese Academy of Medical Sciences, Wuhan, 430071, China
| | - Zhike He
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China
- Wuhan Research Center for Infectious Diseases and Cancer, Chinese Academy of Medical Sciences, Wuhan, 430071, China
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47
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Mao K, Zhang H, Ran F, Cao H, Feng R, Du W, Li X, Yang Z. Portable biosensor combining CRISPR/Cas12a and loop-mediated isothermal amplification for antibiotic resistance gene ermB in wastewater. J Hazard Mater 2024; 462:132793. [PMID: 37856955 DOI: 10.1016/j.jhazmat.2023.132793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 10/01/2023] [Accepted: 10/14/2023] [Indexed: 10/21/2023]
Abstract
Wastewater is among the main sources of antibiotic resistance genes (ARGs) in the environment, but effective methods to quickly assess ARGs on-site in wastewater are lacking. Here, using the typical ARG ermB as the target, we report a portable biosensor combining CRISPR/Cas12a and loop-mediated isothermal amplification (LAMP) for the detection of ARGs. Six primers of LAMP and the crRNA of CRISPR/Cas12a were first designed to be preamplification with LAMP and lead Cas12a to recognize the ermB via base pairing. Due to the trans-cleavage activity of CRISPR/Cas12a after amplicon recognition, ssDNA probes modified with reporter molecules were used to implement a visual assay with lateral flow test strips and fluorescence. After a simple nucleic acid extraction with magnetic beads, the constructed biosensor possesses excellent sensitivity and selectivity as low as 2.75 × 103 copies/μL using fluorescence and later flow strips in wastewater. We further evaluated the community-wide prevalence of ermB in wastewater influent and found high mass loads of ermB during different months. This user-friendly and low-cost biosensor is applicable for rapid on-site ARG detection, providing a potential point-of-use method for rapid assessments of ARG abundance in wastewater from large city areas with many wastewater treatment plants and in resource-limited rural areas.
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Affiliation(s)
- Kang Mao
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
| | - Hua Zhang
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China.
| | - Fang Ran
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
| | - Haorui Cao
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
| | - Rida Feng
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
| | - Wei Du
- Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, China
| | - Xiqing Li
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Zhugen Yang
- School of Water, Energy, and Environment, Cranfield University, Cranfield MK43 0AL, UK
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Wang H, Su A, Bao C, Liang C, Xu W, Chang J, Xu S. A CRISPR/Cas12a-SERS platform for amplification-free detection of African swine fever virus genes. Talanta 2024; 267:125225. [PMID: 37741267 DOI: 10.1016/j.talanta.2023.125225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 08/26/2023] [Accepted: 09/18/2023] [Indexed: 09/25/2023]
Abstract
A surface-enhanced Raman scattering (SERS) strategy combined with a CRISPR/Cas12a system is designed for the amplification-free gene detection of African swine fever virus (ASFV). A SERS sensing probe was fabricated by conjugating plasmonic SERS tags on the magnetic bead (MB) surface with an single-stranded DNA (ssDNA) as a linker. The target ASFV gene-activated Cas12a protein starts the trans-cleavage function on the linker ssDNA, which causes the release of SERS tags, leading to a decrease of the SERS signal detected above the collective MBs. Two signal enhancement strategies were adopted to improve the liquid-phase detection sensitivity arriving at the fM level. One is the unlimited trans-cleavage function of the Cas12a protein, and the other is the magnetic-induced collection of probes that can significantly gather the analytes from the solution to the laser spot and provide SERS hotspots during SERS measurement. Detection range is from 100 nM to 10 fM without the gene amplification steps. This sensing method achieved the SERS detection of ASFV gene in the serum system and the extracted nucleic acids in viral samples with high sensitivity and selectivity at a relative standard deviation of <8%. This sensing platform is mainly in use for site inspection and quick testing of gene samples.
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Affiliation(s)
- Huimin Wang
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun, 130022, PR China; State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, PR China
| | - Ailing Su
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, PR China
| | - Chengxin Bao
- Institute of Frontier Medical Science, Jilin University, Changchun, 130021, PR China
| | - Chongyang Liang
- Institute of Frontier Medical Science, Jilin University, Changchun, 130021, PR China
| | - Weiqing Xu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, PR China; Theoretical Chemistry, College of Chemistry, Jilin University, Changchun, 130012, PR China
| | - Jingjing Chang
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun, 130022, PR China.
| | - Shuping Xu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, PR China; Theoretical Chemistry, College of Chemistry, Jilin University, Changchun, 130012, PR China; Center for Supramolecular Chemical Biology, College of Chemistry, Jilin University, Changchun, 130012, PR China.
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Zhang H, Zhao H, Cao L, Yu B, Wei J, Pan G, Bao J, Zhou Z. Harnessing multiplex crRNA enables an amplification-free/CRISPR-Cas12a-based diagnostic methodology for Nosema bombycis. Microbiol Spectr 2024; 12:e0301423. [PMID: 38014967 PMCID: PMC10783057 DOI: 10.1128/spectrum.03014-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 10/17/2023] [Indexed: 11/29/2023] Open
Abstract
IMPORTANCE The multiplex-crRNA CRISPR/Cas12a detection method saves hands-on time, reduces the risk of aerosol pollution, and can be directly applied to detecting silkworms infected with Nosema bombycis. This study provides a new approach for the inspection and quarantine of silkworm pébrine disease in sericulture and provides a new method for the detection of other pathogens.
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Affiliation(s)
- Huarui Zhang
- State Key Laboratory of Resource Insects, Southwest University, Chongqing, China
- Chongqing Key Laboratory of Microsporidia Infection and Control, Southwest University, Chongqing, China
| | - Huijuan Zhao
- State Key Laboratory of Resource Insects, Southwest University, Chongqing, China
- Chongqing Key Laboratory of Microsporidia Infection and Control, Southwest University, Chongqing, China
| | - Lu Cao
- State Key Laboratory of Resource Insects, Southwest University, Chongqing, China
- Chongqing Key Laboratory of Microsporidia Infection and Control, Southwest University, Chongqing, China
| | - Bin Yu
- State Key Laboratory of Resource Insects, Southwest University, Chongqing, China
- Chongqing Key Laboratory of Microsporidia Infection and Control, Southwest University, Chongqing, China
| | - Junhong Wei
- State Key Laboratory of Resource Insects, Southwest University, Chongqing, China
- Chongqing Key Laboratory of Microsporidia Infection and Control, Southwest University, Chongqing, China
| | - Guoqing Pan
- State Key Laboratory of Resource Insects, Southwest University, Chongqing, China
- Chongqing Key Laboratory of Microsporidia Infection and Control, Southwest University, Chongqing, China
| | - Jialing Bao
- State Key Laboratory of Resource Insects, Southwest University, Chongqing, China
- Chongqing Key Laboratory of Microsporidia Infection and Control, Southwest University, Chongqing, China
| | - Zeyang Zhou
- State Key Laboratory of Resource Insects, Southwest University, Chongqing, China
- Chongqing Key Laboratory of Microsporidia Infection and Control, Southwest University, Chongqing, China
- College of Life Science, Chongqing Normal University, Chongqing, China
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50
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Zhang X, Li Z, Yang L, Hu B, Zheng Q, Man J, Cao J. CRISPR/Cas12a-Derived Photoelectrochemical Aptasensor Based on Au Nanoparticle-Attached CdS/UiO-66-NH 2 Heterostructures for the Rapid and Sensitive Detection of Ochratoxin A. J Agric Food Chem 2024; 72:874-882. [PMID: 38156660 DOI: 10.1021/acs.jafc.3c09106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
The sensitive and accurate detection of ochratoxin A (OTA) is crucial for public health due to its high toxicity. Herein, using Au nanoparticle (NP)-attached CdS/UiO-66-NH2 heterostructures as photoactive materials, a photoelectrochemical (PEC) aptasensor was presented for the ultrasensitive assay of OTA based on a competitive displacement reaction triggering the trans-cleavage ability of CRISPR/Cas12a. In this sensing strategy, methylene blue-labeled single-stranded DNA (MB-ssDNA) was immobilized on the Au NPs/CdS/UiO-66-NH2 electrode to accelerate the separation of the photogenerated carrier, thus producing a significantly increased PEC response. In the presence of OTA, it specifically bound with the aptamer (Apt) and resulted in the release of the activation chain, triggering the trans-cleavage characteristics of CRISPR/Cas12a. MB-ssDNA was cut randomly on the electrode surface to convert the PEC signal from the "on" to the "off" state, thereby achieving a quantitative and accurate detection of OTA. The CRISPR/Cas12a-derived PEC aptasensor exhibited excellent sensitivity and specificity, with a linear range from 100 to 50 ng/mL and a detection limit of 38 fg/mL. Overall, the proposed aptasensor could provide a rapid, accurate, and sensitive method for the determination of OTA in actual samples.
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Affiliation(s)
- Xiaobo Zhang
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, School of Life Sciences, Dalian Minzu University, Dalian 116600, China
| | - Zhiru Li
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, School of Life Sciences, Dalian Minzu University, Dalian 116600, China
| | - Lili Yang
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, School of Life Sciences, Dalian Minzu University, Dalian 116600, China
| | - Bing Hu
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, School of Life Sciences, Dalian Minzu University, Dalian 116600, China
| | - Qiuyue Zheng
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, School of Life Sciences, Dalian Minzu University, Dalian 116600, China
| | - Jiang Man
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, School of Life Sciences, Dalian Minzu University, Dalian 116600, China
| | - Jijuan Cao
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, School of Life Sciences, Dalian Minzu University, Dalian 116600, China
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