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Zhang H, Gao H, Liu S, Ren X, Que L, Gu X, Rong S, Ma H, Ruan J, Miao M, Qi X, Chang D, Pan H. Dual electrochemical signal "signal-on-off" sensor based on CHA-Td-HCR and CRISPR-Cas12a for MUC1 detection. Talanta 2024; 279:126665. [PMID: 39116728 DOI: 10.1016/j.talanta.2024.126665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 07/30/2024] [Accepted: 08/02/2024] [Indexed: 08/10/2024]
Abstract
Mucin 1 (MUC1) is frequently overexpressed in various cancers and is essential for early cancer detection. Current methods to detect MUC1 are expensive, time-consuming, and require skilled personnel. Therefore, developing a simple, sensitive, highly selective MUC1 detection sensor is necessary. In this study, we proposed a novel "signal-on-off" strategy that, in the presence of MUC1, synergistically integrates catalytic hairpin assembly (CHA) with DNA tetrahedron (Td)-based nonlinear hybridization chain reaction (HCR) to enhance the immobilization of electrochemically active methylene blue (MB) on magnetic nanoparticles (MNP), marking the MB signal "on". Concurrently, the activation of CRISPR-Cas12a by isothermal amplification products triggers the cleavage of single-stranded DNA (ssDNA) at the electrode surface, resulting in a reduction of MgAl-LDH@Fc-AuFe-MIL-101 (containing ferrocene, Fc) on the electrode, presenting the "signal-off" state. Both MB and MgAl-LDH@Fc-AuFe-MIL-101 electrochemical signals were measured and analyzed. Assay parameters were optimized, and sensitivity, stability, and linear range were assessed. Across a concentration spectrum of MUC1 spanning from 10 fg/mL to 100 ng/mL, the MB and MgAl-LDH@Fc-AuFe-MIL-101 signals were calibrated with each other, demonstrating a "signal-on-off" dual electrochemical signaling pattern. This allows for the precise and quantitative detection of MUC1 in clinical samples, offering significant potential for medical diagnosis.
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Affiliation(s)
- Hehua Zhang
- Collaborative Research Center, Shanghai University of Medicine and Health Sciences, Shanghai, 201318, China; College of International Education, Shanghai University of Medicine and Health Sciences, Shanghai, 201318, China
| | - Hongmin Gao
- Collaborative Research Center, Shanghai University of Medicine and Health Sciences, Shanghai, 201318, China; School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Simin Liu
- Collaborative Research Center, Shanghai University of Medicine and Health Sciences, Shanghai, 201318, China; School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Xinshui Ren
- Collaborative Research Center, Shanghai University of Medicine and Health Sciences, Shanghai, 201318, China; Graduate School of Shanghai University of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Longbin Que
- Collaborative Research Center, Shanghai University of Medicine and Health Sciences, Shanghai, 201318, China; School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Xin Gu
- Collaborative Research Center, Shanghai University of Medicine and Health Sciences, Shanghai, 201318, China; School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Shengzhong Rong
- Public Health School, Mudanjiang Medical University, Mudanjiang, 157011, China
| | - Hongkun Ma
- Public Health School, Mudanjiang Medical University, Mudanjiang, 157011, China
| | - Junbin Ruan
- Faculty of Foreign Languages, Shanghai University of Medicine and Health Sciences, Shanghai, 201318, China
| | - Meng Miao
- The College of Medical Technology, Shanghai University of Medicine and Health Sciences, Shanghai, 201318, China
| | - Xue Qi
- School of Pharmacy, Shanghai University of Medicine and Health Sciences, Shanghai, 201318, China
| | - Dong Chang
- Department of Clinical Laboratory, The Affiliated Pudong Hospital, Fudan University, Shanghai, 201399, China.
| | - Hongzhi Pan
- The Affiliated Zhoupu Hospital, Shanghai University of Medicine and Health Sciences, Shanghai, 201318, China.
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2
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Li L, Li M, Qiu Y, Dong Y. A sensitive CRISPR/Cas12a-assisted fluorescent aptasensor for rapid detection of food allergens. Int J Biol Macromol 2024; 274:133444. [PMID: 38936584 DOI: 10.1016/j.ijbiomac.2024.133444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Revised: 06/21/2024] [Accepted: 06/24/2024] [Indexed: 06/29/2024]
Abstract
Food allergens elicit abnormal immune system responses among allergic individuals and sensitive detection for allergenic ingredient is greatly significant. To address this need, a novel fluorescent aptasensor, assisted by Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR), have been developed for food allergens. In this study, aptamer offers distinctive recognition capabilities in binding specific targets, while CRISPR-associated-12a protein (Cas12a) holds precise cis-cleavage for cutting fluorescent signal probes. Notably, the utilization of Cas12a cis-cleavage activity, rather than trans-cleavage, eliminates the necessity for additional fluorescent probes, thus reducing interference between substances and enhancing sensitivity. Throughout the process, complementary DNA (cDNA) plays a crucial dual role in target recognition conversion and signal presentation, representing a key challenge and innovative aspect of this study. To evaluate the performance of the aptasensor, lysozyme (LYS) is employed as a representative model target of food allergens. Under optimal conditions, the developed aptasensor could achieve an exceptional low limit of detection (LOD) of 6.10 pM with a dynamic detection range of 10 pM-320 pM. The aptasensor demonstrates high selectivity and great recovery rates. This strategy yields promising outcomes, holding the potential to serve as a valuable reference for various food allergens detection.
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Affiliation(s)
- Ling Li
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Menglei Li
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Yinghua Qiu
- Center for Molecular Diagnostics and Precision Medicine, Drexel University College of Medicine, Philadelphia 19102, USA
| | - Yiyang Dong
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, PR China.
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3
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He X, Deng L, Zhou S, Dong J, Zhu S, Li J, Li X, Huo D, Hou C. CRISPR/Cas12a-coupled multiplexed strand displacement amplification for miRNA155 one-tube detection: via a dual-cavity PCR tube. Mikrochim Acta 2024; 191:470. [PMID: 39023769 DOI: 10.1007/s00604-024-06538-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2024] [Accepted: 06/30/2024] [Indexed: 07/20/2024]
Abstract
A CRISPR/Cas12a-coupled multiplexed strand displacement amplification (CMSDA) for the detection of miR155 has been developed. Non-specific amplification was avoided by designing a single-stranded DNA template with a hairpin structure. The detection target miR155 was used as a primer to initiate a multiple-strand displacement reaction to produce abundant ssDNA. ssDNA was recognized by the Cas12a/CrRNA binary complex, activating the trans-cleaving activity of Cas12a. The multiple-strand displacement reaction is more efficiently detected compared with a single-strand displacement reaction. The detection range is from 250 pM to 1 nM, and the limit of the detection is 6.5 pM. The proposed method showed a good applicability in complex serum environments, indicating that the method has a broad prospect for disease detection and clinical application. In addition, we designed a dual-cavity PCR tube, which realized one-tube detection of miRNA155 and avoided open-cap contamination.
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Affiliation(s)
- Xinyu He
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, PR China
| | - Liyuan Deng
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, PR China
| | - Shiying Zhou
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, PR China
| | - Jiangbo Dong
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, PR China
| | - Shuyu Zhu
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, PR China
| | - Jiawei Li
- Chongqing University Three Gorges Hospital, Chongqing, 404000, PR China
| | - Xinyao Li
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, PR China
| | - Danqun Huo
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, PR China.
- State Key Laboratory of Digital Medical Engineering, Southeast University, Nanjing, 210018, PR China.
| | - Changjun Hou
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, PR China.
- Chongqing Key Laboratory of Bio-perception & Intelligent Information Processing, School of Microelectronics and Communication Engineering, Chongqing University, Chongqing, 400044, PR China.
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4
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Ke X, Liang A, Chen C, Hu T. A one-pot CRISPR-RCA strategy for ultrasensitive and specific detection of circRNA. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:3256-3262. [PMID: 38726809 DOI: 10.1039/d4ay00693c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2024]
Abstract
Accurate and precise detection of circular RNA (circRNA) is imperative for its clinical use. However, the inherent challenges in circRNA detection, arising from its low abundance and potential interference from linear isomers, necessitate innovative solutions. In this study, we introduce, for the first time, the application of the CRISPR/Cas12a system to establish a one-pot, rapid (30 minutes to 2 hours), specific and ultrasensitive circRNA detection strategy, termed RETA-CRISPR (reverse transcription-rolling circle amplification (RT-RCA) with the CRISPR/Cas12a). This method comprises two steps: (1) the RT-RCA process of circRNA amplification, generating repeat units containing the back-splicing junction (BSJ) sequences; and (2) leveraging the protospacer adjacent motif (PAM)-independent Cas12a/crRNA complex to precisely recognize target sequences with BSJ, thereby initiating the collateral cleavage activity of Cas12a to generate a robust fluorescence signal. Remarkably, this approach exhibits the capability to detect circRNAs at a concentration as low as 300 aM. The sensor has been successfully employed for accurate detection of a potential hepatocellular carcinoma biomarker hsa_circ_0001445 (circRNA1445) in various cell lines. In conclusion, RETA-CRISPR seamlessly integrates the advantages of exponential amplification reaction and the robust collateral cleavage activity of Cas12a, positioning it as a compelling tool for practical CRISPR-based diagnostics.
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Affiliation(s)
- Xinxin Ke
- Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China.
| | - Ajuan Liang
- Department of Obstetrics, Shanghai First Maternity and Infant Hospital, Obstetrics and Gynecology Hospital, School of Medicine, Tongji University, Shanghai 201204, China
| | - Chuanxia Chen
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, China
| | - Tao Hu
- Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China.
- School of Basic Medical Sciences & Forensic Medicine, Hangzhou Medical College, Hangzhou 310000, China
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5
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Xie J, Chen J, Zhang Y, Li C, Liu P, Duan WJ, Chen JX, Chen J, Dai Z, Li M. A dual-signal amplification strategy based on rolling circle amplification and APE1-assisted amplification for highly sensitive and specific miRNA analysis for early diagnosis of alzheimer's disease. Talanta 2024; 272:125747. [PMID: 38364557 DOI: 10.1016/j.talanta.2024.125747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 01/27/2024] [Accepted: 02/05/2024] [Indexed: 02/18/2024]
Abstract
MicroRNA (miRNA) is involved in the progression of Alzheimer's disease (AD) and emerges as a promising AD biomarker and therapeutic target. Therefore, there is an urgent need to develop convenient and precise miRNA detection methods for AD diagnosis. Herein, a dual-signal amplification strategy based on rolling circle amplification and APE1-assisted amplification for miRNA analysis for early diagnosis of AD was proposed. The strategy consisted of dumbbell-shaped probe (DP) as amplification template and a reporter probe (RP) with an AP site modification. In the presence of the target miRNA, the miRNAs bound to the toehold domain of DP and DP was activated into a circular template. Then, RCA reaction was triggered, producing a large number of long-stranded products containing repeated sequences. After RCA, APE1 enzyme recognized and removed AP site in the complex of RCA/RP products. By coupling RCA with APE1-assisted amplification, this method has high sensitivity with the limit of detection (LOD) of 1.82 fM. Moreover, by using DP as template for RCA reaction, high specificity can be achieved. By detecting miR-206 in serum using this method, the expression of miR-206 can be accurately distinguished between AD patients and healthy individuals, indicating that this method has broad application prospects in clinical diagnosis.
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Affiliation(s)
- Juan Xie
- Center of Clinical Laboratory, The First Affiliated Hospital of Jinan University, Guangzhou 510632, PR China
| | - Jing Chen
- Center of Clinical Laboratory, The First Affiliated Hospital of Jinan University, Guangzhou 510632, PR China
| | - Ya Zhang
- Center of Clinical Laboratory, The First Affiliated Hospital of Jinan University, Guangzhou 510632, PR China
| | - Changhong Li
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, PR China
| | - Piao Liu
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, PR China
| | - Wen-Jun Duan
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, PR China
| | - Jin-Xiang Chen
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, PR China.
| | - Jun Chen
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, PR China; Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, Qingdao University of Science and Technology, Qingdao, 266042, PR China.
| | - Zong Dai
- Guangdong Provincial Key Laboratory of Sensing Technology and Biomedical Instrument, School of Biomedical Engineering, Sun Yat-Sen University, Shenzhen 518107, PR China
| | - Minmin Li
- Center of Clinical Laboratory, The First Affiliated Hospital of Jinan University, Guangzhou 510632, PR China.
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6
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Chen J, Zhang J, Xie Q, Chu Z, Lu Y, Zhang F, Wang Q. Isothermal strand displacement polymerase reaction (ISDPR)-assisted microchip electrophoresis for highly sensitive detection of cancer associated microRNAs. Anal Chim Acta 2024; 1300:342469. [PMID: 38521570 DOI: 10.1016/j.aca.2024.342469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 03/06/2024] [Accepted: 03/11/2024] [Indexed: 03/25/2024]
Abstract
More and more studies have found that microRNAs (miRNAs) are markers of cancer, and detection of miRNAs is beneficial for early diagnosis and prognosis of cancer. In this paper, the isothermal strand displacement polymerase reaction (ISDPR), which is an enzyme-assisted nucleic acid amplification method, was studied to combine with microchip electrophoresis (MCE) for a simultaneously detection of two cancer related miRNAs named microRNA-21 (miR-21) and microRNA-221 (miR-221). In the ISDPR amplification, two different DNA hairpins (HPs) were specifically designed, so that miR-21 and miR-221 could respectively bind to HPs and started ISDPR amplification to generate two different products which were ultimately detected by MCE. The optimal conditions of ISDPR were carefully investigated, and the limits of detection (LOD) of miR-21 and miR-221 were as low as 0.35 fM and 0.25 fM (S/N = 3) respectively under these conditions. The human lung tumor cells and serum samples were analyzed by this ISDPR-MCE method and satisfactory results were obtained, which means that this method is of high sensitivity, high efficiency, low reagent consumption and simple operation in miRNAs detection.
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Affiliation(s)
- Jingyi Chen
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, PR China
| | - Jingzi Zhang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, PR China
| | - Qihui Xie
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, PR China
| | - Zhaohui Chu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, PR China
| | - Yuqi Lu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, PR China
| | - Fan Zhang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, PR China.
| | - Qingjiang Wang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, PR China.
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7
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Yu S, Lei X, Qu C. MicroRNA Sensors Based on CRISPR/Cas12a Technologies: Evolution From Indirect to Direct Detection. Crit Rev Anal Chem 2024:1-17. [PMID: 38489095 DOI: 10.1080/10408347.2024.2329229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2024]
Abstract
MicroRNA (miRNA) has emerged as a promising biomarker for disease diagnosis and a potential therapeutic targets for drug development. The detection of miRNA can serve as a noninvasive tool in diseases diagnosis and predicting diseases prognosis. CRISPR/Cas12a system has great potential in nucleic acid detection due to its high sensitivity and specificity, which has been developed to be a versatile tool for nucleic acid-based detection of targets in various fields. However, conversion from RNA to DNA with or without amplification operation is necessary for miRNA detection based on CRISPR/Cas12a system, because dsDNA containing PAM sequence or ssDNA is traditionally considered as the activator of Cas12a. Until recently, direct detection of miRNA by CRISPR/Cas12a system has been reported. In this review, we provide an overview of the evolution of biosensors based on CRISPR/Cas12a for miRNA detection from indirect to direct, which would be beneficial to the development of CRISPR/Cas12a-based sensors with better performance for direct detection of miRNA.
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Affiliation(s)
- Songcheng Yu
- College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Xueying Lei
- College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Chenling Qu
- School of Food and Strategic Reserves, Henan University of Technology, Zhengzhou, China
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8
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Wang X, Yuwen X, Lai S, Li X, Lai G. Enhancement of telomerase extension via quadruple nucleic acid recycling to develop a novel colorimetric biosensing method for kanamycin assay. Anal Chim Acta 2024; 1287:342139. [PMID: 38182400 DOI: 10.1016/j.aca.2023.342139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 12/05/2023] [Accepted: 12/12/2023] [Indexed: 01/07/2024]
Abstract
BACKGROUND Colorimetric biosensors have important value for antibiotic residue testing. However, many previous methods were constructed based on the optical density change of certain unstable single-colored products with poor discrimination for visual measurements. Moreover, their low extinction coefficients usually result in low sensitivity of biosensors. In addition, many conventional signal amplification strategies often involve sophisticated nanomaterial preparation, inconvenient multi-step assay manipulation and limited signal amplification ability. Therefore, the development of new colorimetric biosensing strategies with excellent visual discrimination, high sensitivity and convenient manipulation is highly desirable. RESULTS We designed a target recycling accelerated cascade DNA walking amplification mechanism to trigger a telomerase extension-related enzymatic reaction, and developed a novel colorimetric biosensing strategy for kanamycin (Kana) assay. The target recycling was induced by an exonuclease III-assisted aptamer recognition reaction, which could also trigger the successive DNA walking at the streptavidin (SA)- and magnetic bead (MB)-based tracks. This not only caused the quantitative exposure of the telomeric substrate primers on MB surfaces but also released another strand to accelerate the SA-based DNA walking. By using the telomerase extension product to link numerous alkaline phosphatases and induce the plasmonic property change of gold nanobipyramids (Au NBPs), a colorimetric signal output strategy was constructed. This method could be applied for the high-resolution visual screening of Kana, and it also showed a very low detection limit of 17.6 fg mL-1 for assaying Kana over a wide, five-order-magnitude linear range. SIGNIFICANCE The quadruple nucleic acid recycling-enhanced telomerase extension resulted in the ultrahigh sensitivity of the method and also excluded the sophisticated manipulations involved in conventional biosensing strategies. The multiple enzyme catalysis-induced plasmonic property change of Au NBPs realized the stable and multicolor visual signal transduction. Together with its low cost, simple operation, high selectivity, excellent repeatability, and reliable performances, this method exhibits great potential for use in practical applications.
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Affiliation(s)
- Xiaojun Wang
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi, 435002, China
| | - Xinyue Yuwen
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi, 435002, China
| | - Shanshan Lai
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi, 435002, China
| | - Xin Li
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi, 435002, China
| | - Guosong Lai
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi, 435002, China.
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Jiang S, Liu T, Liu Q, Zhang Q, Han Y, Tian X, Zhang CY. Rapid, Sensitive, and Label-Free Detection of Long Noncoding RNAs in Breast Cancer Tissues by RecJ f Exonuclease-Assisted Recombinase Polymerase Amplification. Anal Chem 2023; 95:15133-15139. [PMID: 37751602 DOI: 10.1021/acs.analchem.3c03920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/28/2023]
Abstract
An abnormal expression level of long noncoding RNAs (lncRNAs) is implicated in multiple cancers, and their sensitive and rapid measurement is pivotal for early cancer diagnosis and cancer treatment. The conventional lncRNA assays often suffer from labor-intensive/time-consuming procedures and limited sensitivity. Herein, we report a simple and sensitive fluorescent biosensor for rapid and label-free measurement of lncRNAs based on recombinase polymerase amplification (RPA) without the involvement of thermal cycling and reverse transcription. Target lncRNAs can bind with the 5'-end of the DNA template to create a DNA-lncRNA hybrid, protecting the DNA template from RecJf exonuclease-mediated degradation. Subsequently, the primers hybridize with the intact DNA templates and are extended to generate the dsDNA products with the assistance of polymerase. The resultant dsDNA products may be amplified by exponential recombinase polymerase amplification to produce abundant dsDNAs, generating a distinct fluorescence signal within 10 min. This biosensor achieves a wide dynamic range from 10-17 to 10-9 M and high sensitivity with a detection limit of 1.23 aM. Moreover, it can distinguish the expressions of lncRNA HOTAIR in the tissues of healthy individuals and breast cancer patients, with broad application prospects in lncRNA-related research and early diagnosis of cancers.
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Affiliation(s)
- Su Jiang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China
| | - Ting Liu
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China
| | - Qian Liu
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Qian Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China
| | - Yun Han
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Xiaorui Tian
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China
| | - Chun-Yang Zhang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
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10
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Kou HS, Lin KH, Sebuyoya R, Chueh KS, Cheng CW, Wang CC. Dual-probe ligation without PCR for fluorescent sandwich assay of EGFR nucleotide variants in magnetic gene capture platform. Mikrochim Acta 2023; 190:375. [PMID: 37653003 DOI: 10.1007/s00604-023-05950-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 08/07/2023] [Indexed: 09/02/2023]
Abstract
A simple, rapid, and highly efficient fluorescent detection technique without PCR through dual-probe ligation with the genetic capture of magnetic beads and reported probe was developed for determination of epidermal growth factor receptor (EGFR) gene exon 19 deletions. The EGFR exon 19 deletion mutation makes up 48% of all mutations associated with anti-tyrosine kinase inhibition sensitivity, and thus, the EGFR nucleotide variant is very important in clinical diagnosis. In this approach, the dual-probe ligation was designed to target exon 19 deletion. The magnetic genetic captured system was then applied to capture the successful dual-probe ligation. Thereafter, a reporter probe which is coupled with 6-fluorescein amidite (6-FAM) was introduced to hybridize with dual-probe ligation product on the surface of streptavidin magnetic beads, and finally, the supernatant was taken for fluorescence measurements for distinguishing mutant types from wild types. After optimization (the RSD of the fluorescent intensity was less than 4.5% (n = 3) under the optimal condition), 20 blind DNA samples from the population were analyzed by this technique and further confirmed by direct sequencing. The results of our assay matched to those from direct sequencing data, evidencing that the developed method is accurate and successful. These 20 blind DNA samples were diagnosed as wild and then spiked with different percentages of the mutant gene to quantify the ratio of the wild and mutant genes. This strategy was also successfully applied to quantify the ratio of the wild and mutant genes with good linearity at the λex/λem of 480 nm/520 nm (r = 0.996), and the limit of detection reached 1.0% mutant type. This simple fluorescent detection of nucleotide variants shows its potential to be considered a tool in biological and clinical diagnosis. Importantly, this strategy offers a universal detection capability for any kind of mutation (point, deletion, insertion, or substitution) in a gene of interest.
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Affiliation(s)
- Hwang-Shang Kou
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, 100, Shi-chuan 1st Rd, Kaohsiung, 807, Taiwan, Republic of China
| | - Kung-Hung Lin
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, 100, Shi-chuan 1st Rd, Kaohsiung, 807, Taiwan, Republic of China
- Department of Surgery, Division of General Surgery, Zuoying Branch of Kaohsiung Armed Forces General Hospital, Kaohsiung, Taiwan, Republic of China
| | - Ravery Sebuyoya
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, 100, Shi-chuan 1st Rd, Kaohsiung, 807, Taiwan, Republic of China
| | - Kuang-Shun Chueh
- Department of Urology, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung, Taiwan, Republic of China
| | - Cheng-Wei Cheng
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, 100, Shi-chuan 1st Rd, Kaohsiung, 807, Taiwan, Republic of China
| | - Chun-Chi Wang
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, 100, Shi-chuan 1st Rd, Kaohsiung, 807, Taiwan, Republic of China.
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan, Republic of China.
- Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan, Republic of China.
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