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Cheng M, Tan C, Xiang B, Lin W, Cheng B, Peng X, Yang Y, Lin Y. Chain hybridization-based CRISPR-lateral flow assay enables accurate gene visual detection. Anal Chim Acta 2023; 1270:341437. [PMID: 37311609 DOI: 10.1016/j.aca.2023.341437] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 05/22/2023] [Accepted: 05/26/2023] [Indexed: 06/15/2023]
Abstract
Visualized gene detection based on the CRISPR-Cas12/CRISPR-Cas13 technology and lateral flow assay device (CRISPR-LFA) has shown great potential in point-of-care testing sector. Current CRISPR-LFA methodology mainly utilizes conventional immuno-based LFA test strips, which could visualize whether the reporter probe is trans-cleaved by Cas protein, indicating the target positive detection. However, conventional CRISPR-LFA usually produces false-positive results in target negative assay. Herein, a nucleic acid Chain Hybridization-based Lateral Flow Assay platform, named CHLFA, has been developed to achieve the CRISPR-CHLFA concept. Different from the conventional CRISPR-LFA, the proposed CRISPR-CHLFA system was established based on the nucleic acid hybridization between the GNP-probe embedded in test strips and ssDNA (or ssRNA) reporter from CRISPR (LbaCas12a or LbuCas13a) reaction, which eliminated the requirement of immunoreaction in conventional immuno-based LFA. The assay realized the detection of 1-10 copy of target gene per reaction within 50 min. The CRISPR-CHLFA system achieved highly accurate visual detection of target negative samples, thus overcoming the false-positive problem that often produced in assays using conventional CRISPR-LFA. The CRISPR-CHLFA platform was further adopted for the visual detection of marker gene from SASR-CoV-2 Omicron variant and Mycobacterium tuberculosis (MTB), respectively, and 100% accuracy for the analysis of clinical specimens (45 SASR-CoV-2 specimens and 20 MTB specimens) was obtained. The proposed CRISPR-CHLFA system could provide an alternative platform for the development of POCT biosensors and can be widely adopted in accurate and visualized gene detection.
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Affiliation(s)
- Meng Cheng
- Department of Laboratory Medicine, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Caiwei Tan
- Department of Laboratory Medicine, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Bo Xiang
- Department of Laboratory Medicine, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Weihong Lin
- Department of Laboratory Medicine, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Bolin Cheng
- Department of Laboratory Medicine, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Xuechun Peng
- Department of Laboratory Medicine, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Yihao Yang
- Department of Laboratory Medicine, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Yongping Lin
- Department of Laboratory Medicine, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China; KingMed School of Laboratory Medicine, Guangzhou Medical University, Guangzhou, China.
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2
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Zhao D, Tang J, Tan Q, Xie X, Zhao X, Xing D. CRISPR/Cas13a-triggered Cas12a biosensing method for ultrasensitive and specific miRNA detection. Talanta 2023; 260:124582. [PMID: 37116358 DOI: 10.1016/j.talanta.2023.124582] [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: 02/04/2023] [Revised: 04/17/2023] [Accepted: 04/20/2023] [Indexed: 04/30/2023]
Abstract
Constructing an ultrasensitive CRISPR/Cas-based biosensing strategy is highly significant for the detection of trace targets. Here we presented a dual-amplified biosensing method based on CRISPR/Cas13a-triggered Cas12a, namely, Cas13a-12a amplification. As proof-of-principle, the developed strategy was used for miRNA-155 detection. The target bound to the Cas13a-crRNA complex and activated the cleavage activity of Cas13a for cleaving uracil ribonucleotides (rU) in the bulge structure of blocker strand (BS), resulting in the release of primer strand (PS) from the BS modified on magnetic beads. Then, the released PS activated the cleavage activity of Cas12a to cleave single-strand DNA reporter probes, producing a significantly increased fluorescent signal. The detection limit of the Cas13a-12a amplification using synthetic miRNA-155 was as low as 0.35 fM, which was much lower than that of the only Cas13a-based assay. The applied performance of this amplification strategy was verified by accurately quantifying miRNA-155 expression levels in different cancer patients. Therefore, the developed strategy offers a supersensitive and highly specific miRNAs sensing platform for clinical application.
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Affiliation(s)
- Dan Zhao
- Department of Clinical Laboratory, Chongqing University Three Gorges Hospital, Chongqing, 404000, China
| | - Jiutang Tang
- Center for Neuroscience Research, Chongqing Medical University, 400010, Chongqing, China
| | - Qin Tan
- Department of Clinical Laboratory, Chongqing Wanzhou Shanghai Hospital, Chongqing, 404000, China
| | - Xiaohong Xie
- Department of Clinical Laboratory, Chongqing University Three Gorges Hospital, Chongqing, 404000, China
| | - Xin Zhao
- Department of Clinical Laboratory, Chongqing University Three Gorges Hospital, Chongqing, 404000, China
| | - Dingpei Xing
- Department of Pediatric Surgery, Chongqing University Three Gorges Hospital, Chongqing, 404000, China.
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3
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Chen H, Chen X, Chen Y, Zhang C, Sun Z, Mo J, Wang Y, Yang J, Zou D, Luo Y. High-fidelity imaging of intracellular microRNA via a bioorthogonal nanoprobe. Analyst 2023; 148:1682-1693. [PMID: 36912705 DOI: 10.1039/d3an00088e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Abstract
The spatiotemporal visualization of intracellular microRNA (miRNA) plays a critical role in the diagnosis and treatment of malignant disease. Although DNAzyme-based biosensing has been regarded as the most promising candidate, inefficient analytical resolution is frequently encountered. Here, we propose a bioorthogonal approach toward high-fidelity imaging of intracellular miRNA by designing a multifunctional nanoprobe that integrates MnO2 nanosheet-mediated intracellular delivery and activation by a fat mass and obesity-associated protein (FTO)-switched positive feedback. MnO2 nanosheets facilitate nanoprobe delivery and intracellular DNAzyme cofactors are released upon glutathione-triggered reduction. Meanwhile, an m6A-caged DNAzyme probe could be bioorthogonally activated by intracellular FTO to eliminate potential off-target activation. Therefore, the activated DNAzyme probe and substrate probe could recognize miRNA to perform cascade signal amplification in the initiation of the release of Mn2+ from MnO2 nanosheets. This strategy realized high-fidelity imaging of intracellular aberrant miRNA within tumor cells with a satisfactory detection limit of 9.7 pM, paving the way to facilitate clinical tumor diagnosis and prognosis monitoring.
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Affiliation(s)
- Hengyi Chen
- Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, Chongqing, 400044, P.R. China.
| | - Xiaohui Chen
- Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, Chongqing, 400044, P.R. China. .,Key Laboratory for Biorheological Science and Technology of Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, P.R. China
| | - Yi Chen
- Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, Chongqing, 400044, P.R. China.
| | - Chong Zhang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, P.R. China
| | - Zixin Sun
- Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, Chongqing, 400044, P.R. China.
| | - Jiaxi Mo
- School of Clinical Medicine, Southwest Medical University, Luzhou, Sichuan, 646000, P.R. China
| | - Yongzhong Wang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, P.R. China
| | - Jichun Yang
- Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, Chongqing, 400044, P.R. China.
| | - Dongsheng Zou
- College of Computer Science, Chongqing University Chongqing, 400044, China.
| | - Yang Luo
- Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, Chongqing, 400044, P.R. China. .,College of Life Science and Laboratory Medicine, Kunming Medical University, Kunming, Yunnan, 650050, P.R. China.,Department of Laboratory Medicine, Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, Yunnan, 650118, P.R. China
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Sun Z, Chen X, Niu R, Chen H, Zhu Y, Zhang C, Wang L, Mou H, Zhang H, Luo Y. Liposome fusogenic enzyme-free circuit enables high-fidelity determination of single exosomal RNA. Mater Today Bio 2023; 19:100613. [PMID: 37009069 PMCID: PMC10060373 DOI: 10.1016/j.mtbio.2023.100613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 03/09/2023] [Accepted: 03/16/2023] [Indexed: 03/22/2023] Open
Abstract
Accurate determination of single exosomal inclusions in situ presents a significant challenge due to their extremely low abundance as well sub-100 nm vesicle dimensions. Here, we created a Liposome Fusogenic Enzyme-free circuit (LIFE) approach for the high-fidelity identification of exosome-encapsulated cargoes without destroying the vesicle integrity. The probe-loaded cationic fusogenic liposome could capture and fuse with a single target exosome, enabling probes delivery and target biomolecule-initiated cascaded signal amplification in situ. Then the DNAzyme probe encountered conformal change upon exosomal microRNA activation, and generated a convex DNAzyme structure to cleave the RNA site of substrate probe. After that, the target microRNA could be released to introduce a cleavage cycle to yield amplified fluorescence readout. Therefore, trace cargoes in a single exosome could be accurately determined by elaborately controlling the ratio of introduced LIFE probe, paving the way toward the exploration of a universal sensing platform for the assessment of exosomal cargoes to facilitate early disease diagnosis and personalized treatment.
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Affiliation(s)
- Zixin Sun
- Department of Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, Chongqing, 400044, PR China
- Sanxia Hospital, Chongqing University, Chongqing, 404100, PR China
| | - Xiaohui Chen
- Department of Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, Chongqing, 400044, PR China
- Key Laboratory for Biotechnological Science and Technology of Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, PR China
| | - Ruyan Niu
- Department of Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, Chongqing, 400044, PR China
- Key Laboratory for Biotechnological Science and Technology of Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, PR China
| | - Hengyi Chen
- Department of Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, Chongqing, 400044, PR China
| | - Ying Zhu
- Department of Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, Chongqing, 400044, PR China
| | - Chong Zhang
- Department of Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, Chongqing, 400044, PR China
- Key Laboratory for Biotechnological Science and Technology of Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, PR China
| | - Liu Wang
- Department of Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, Chongqing, 400044, PR China
| | - Huaming Mou
- Sanxia Hospital, Chongqing University, Chongqing, 404100, PR China
- Corresponding author.
| | - Hong Zhang
- Department of Clinical Laboratory, The Second Hospital of Shandong University, Jinan, Shandong, 250033, PR China
- Corresponding author.
| | - Yang Luo
- Department of Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, Chongqing, 400044, PR China
- Corresponding author.
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Hu X, Qin W, Yuan R, Zhang L, Wang L, Ding K, Liu R, Huang W, Zhang H, Luo Y. Programmable molecular circuit discriminates multidrug-resistant bacteria. Mater Today Bio 2022; 16:100379. [PMID: 36042850 PMCID: PMC9420371 DOI: 10.1016/j.mtbio.2022.100379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 07/18/2022] [Accepted: 07/21/2022] [Indexed: 10/31/2022] Open
Abstract
Recognizing multidrug-resistant (MDR) bacteria with high accuracy and precision from clinical samples has long been a difficulty. For reliable detection of MDR bacteria, we investigated a programmable molecular circuit called the Background-free isothermal circuital kit (BRICK). The BRICK method provides a near-zero background signal by integrating four inherent modules equivalent to the conversion, amplification, separation, and reading modules. Interference elimination is largely owing to a molybdenum disulfide nanosheets-based fluorescence nanoswitch and non-specific suppression mediated by molecular inhibitors. In less than 70 min, an accurate distinction of various MDR bacteria was achieved without bacterial lysis. The BRICK technique detected 6.73 CFU/mL of methicillin-resistant Staphylococcus aureus in clinical samples in a proof-of-concept trial. By simply reprogramming the sequence panel, such a high signal-to-noise characteristic has been proven in the four other superbugs. The proposed BRICK method can provide a universal platform for infection surveillance and environmental management thanks to its superior programmability.
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Affiliation(s)
- Xiaolin Hu
- Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, 174 Shazhengjie, Shapingba District, Chongqing, 400044, China
| | - Weichao Qin
- Department of Clinical Laboratory, Jiangjin Hospital, Chongqing University, 725 Jiangzhou Road, Jiangjin District, Chongqing, 402260, China
| | - Rui Yuan
- Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, 174 Shazhengjie, Shapingba District, Chongqing, 400044, China
| | - Liangliang Zhang
- Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, 174 Shazhengjie, Shapingba District, Chongqing, 400044, China
| | - Liangting Wang
- Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, 174 Shazhengjie, Shapingba District, Chongqing, 400044, China
| | - Ke Ding
- Department of Oncology, Jiangjin Hospital, Chongqing University, 725 Jiangzhou Road, Jiangjin District, Chongqing, 402260, China
| | - Ruining Liu
- Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, 174 Shazhengjie, Shapingba District, Chongqing, 400044, China
| | - Wanyun Huang
- Life Science Laboratories, Biology Department, University of Massachusetts Amherst, 240 Thatcher Road, Amherst, MA, 01002, USA
| | - Hong Zhang
- Department of Clinical Laboratory, The Second Hospital of Shandong University, 247 Beiyuan Street, Jinan, Shandong, 250033, China
| | - Yang Luo
- Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, 174 Shazhengjie, Shapingba District, Chongqing, 400044, China
- Department of Clinical Laboratory, Jiangjin Hospital, Chongqing University, 725 Jiangzhou Road, Jiangjin District, Chongqing, 402260, China
- Department of Clinical Laboratory, Fuling Hospital, Chongqing University, 2 Gaosuntang Road, Fuling District, Chongqing, 408099, China
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6
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Chen X, Deng Y, Niu R, Sun Z, Batool A, Wang L, Zhang C, Ma N, Yang Q, Liu G, Yang J, Luo Y. Cancer-Derived Small Extracellular Vesicles PICKER. Anal Chem 2022; 94:13019-13027. [PMID: 35980378 DOI: 10.1021/acs.analchem.2c01683] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Cancer-derived small extracellular vesicles (csEVs) play critical roles in the genesis and development of various cancers. However, accurate detection of low-abundance csEVs remains particularly challenging due to the complex clinical sample composition. In the present study, we constructed a Programmable Isothermal Cascade Keen Enzyme-free Reporter (PICKER) for the reliable detection and acquisition of the relative abundance of csEVs in total sEVs (tsEVs) by integrating dual-aptamer recognition (cancer-specific protein EpCAM and tetraspanin protein CD63) with a catalytic hairpin assembly (CHA) amplification. By employing this strategy, we were able to achieve a detection limit of 420 particles/μL csEVs. Particularly, we proposed a novel particle ratio index of csEV against tsEV (PRcsEV/tsEV) to greatly eliminate errors from inconsistent centrifugation, which was calculated from the fluorescence ratio produced by csEVs and tsEVs. The PICKER showed a 1/10,000 discrimination capability by successfully picking out 1.0 × 103 csEV from 1.0 × 107 tsEV per microliter. We also found that the PRcsEV/tsEV value increased proportional to the stages of breast cancer by analyzing EVs from clinical patients' plasma. Taken together, we established a PICKER strategy capable of accurately discriminating csEVs, and the proposed PRcsEV/tsEV had been proven a potential indicator of breast cancer staging, paving the way toward facilitating cancer diagnosis and precision therapeutics.
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Affiliation(s)
- Xiaohui Chen
- Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, Chongqing 400044, P. R. China.,Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, College of Bioengineering, Chongqing University, Chongqing 400044, P. R. China
| | - Yun Deng
- Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, Chongqing 400044, P. R. China.,Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, College of Bioengineering, Chongqing University, Chongqing 400044, P. R. China
| | - Ruyan Niu
- Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, Chongqing 400044, P. R. China.,Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, College of Bioengineering, Chongqing University, Chongqing 400044, P. R. China
| | - Zixin Sun
- Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, Chongqing 400044, P. R. China
| | - Alya Batool
- Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, Chongqing 400044, P. R. China.,Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, College of Bioengineering, Chongqing University, Chongqing 400044, P. R. China
| | - Liu Wang
- Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, Chongqing 400044, P. R. China
| | - Chong Zhang
- Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, Chongqing 400044, P. R. China
| | - Ningyu Ma
- Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, Chongqing 400044, P. R. China
| | - Qingtang Yang
- Department of Clinical Laboratory, Chongqing University Cancer Hospital, Chongqing 400030, P. R. China
| | - Guoxiang Liu
- Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, Chongqing 400044, P. R. China
| | - Jichun Yang
- Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, Chongqing 400044, P. R. China
| | - Yang Luo
- Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, Chongqing 400044, P. R. China.,Department of Clinical Laboratory, Jiangjin Hospital, Chongqing University, Chongqing 402260, P. R. China.,Department of Clinical Laboratory, Fuling Hospital, Chongqing University, Chongqing 408099, P. R. China
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