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Liu Y, Yu G, Liang H, Sun W, Zhang L, Mauk MG, Li H, Chen L. Detection and identification of SARS-CoV-2 and influenza a based on microfluidic technology. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024. [PMID: 38919038 DOI: 10.1039/d4ay00847b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
As of now, the global COVID-19 pandemic caused by SARS-CoV-2, which began in 2019, has been effectively controlled. However, the symptoms of influenza A virus infection were similar to those of SARS-CoV-2 infection, but they required different treatment approaches. To make the detection more accurate and the treatment more targeted. We developed a system that integrates RPA and CRISPR assays, allowing for the rapid, highly specific, and sensitive detection and differentiation of SARS-CoV-2, H1N1, and H3N2. Under isothermal amplification conditions, the RPA-CRISPR Cas12a detection system achieved a detection limit as low as 5 copies per μL, demonstrating excellent specificity. The measurement time was approximately 30 minutes. The RPA-CRISPR Cas12a detection system combined with the microfluidic chip we designed to simultaneously detect three viruses, providing a potential solution for efficient and reliable diagnosis.
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Affiliation(s)
- Yujie Liu
- Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, Jinan Shandong, China.
| | - Guanliu Yu
- Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, Jinan Shandong, China.
| | - Hongkun Liang
- Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, Jinan Shandong, China.
| | - Wenbo Sun
- Shandong Key Laboratory of Animal Disease Control and Breeding, Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Jinan Shandong, China
| | - Lulu Zhang
- College of Information Science and Technology, Beijing University of Chemical Technology, Beijing, China
| | - Michael G Mauk
- Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, Pennsylvania, 19104, USA
| | - Hua Li
- Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, Jinan Shandong, China.
| | - Lei Chen
- Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, Jinan Shandong, China.
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Hu T, Ke X, Li W, Lin Y, Liang A, Ou Y, Chen C. CRISPR/Cas12a-Enabled Multiplex Biosensing Strategy Via an Affordable and Visual Nylon Membrane Readout. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2204689. [PMID: 36442853 PMCID: PMC9839848 DOI: 10.1002/advs.202204689] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 11/09/2022] [Indexed: 06/16/2023]
Abstract
Most multiplex nucleic acids detection methods require numerous reagents and high-priced instruments. The emerging clustered regularly interspaced short palindromic repeats (CRISPR)/Cas has been regarded as a promising point-of-care (POC) strategy for nucleic acids detection. However, how to achieve CRISPR/Cas multiplex biosensing remains a challenge. Here, an affordable means termed CRISPR-RDB (CRISPR-based reverse dot blot) for multiplex target detection in parallel, which possesses the advantages of high sensitivity and specificity, cost-effectiveness, instrument-free, ease to use, and visualization is reported. CRISPR-RDB integrates the trans-cleavage activity of CRISPR-Cas12a with a commercial RDB technique. It utilizes different Cas12a-crRNA complexes to separately identify multiple targets in one sample and converts targeted information into colorimetric signals on a piece of accessible nylon membrane that attaches corresponding specific-oligonucleotide probes. It has demonstrated that the versatility of CRISPR-RDB by constructing a four-channel system to simultaneously detect influenza A, influenza B, respiratory syncytial virus, and SARS-CoV-2. With a simple modification of crRNAs, the CRISPR-RDB can be modified to detect human papillomavirus, saving two-thirds of the time compared to a commercial PCR-RDB kit. Further, a user-friendly microchip system for convenient use, as well as a smartphone app for signal interpretation, is engineered. CRISPR-RDB represents a desirable option for multiplexed biosensing and on-site diagnosis.
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Affiliation(s)
- Tao Hu
- The Children's HospitalZhejiang University School of MedicineNational Clinical Research Center for Child HealthHangzhouZhejiang310052China
| | - Xinxin Ke
- The Children's HospitalZhejiang University School of MedicineNational Clinical Research Center for Child HealthHangzhouZhejiang310052China
| | - Wei Li
- The Children's HospitalZhejiang University School of MedicineNational Clinical Research Center for Child HealthHangzhouZhejiang310052China
| | - Yu Lin
- International Peace Maternity & Child Health HospitalShanghai Municipal Key Clinical SpecialtyInstitute of Embryo‐Fetal Original Adult DiseaseSchool of MedicineShanghai Jiao Tong UniversityShanghai200030China
| | - Ajuan Liang
- Center of Reproductive MedicineShanghai First Maternity and Infant HospitalTongji University School of MedicineShanghai201204China
| | - Yangjing Ou
- International Peace Maternity & Child Health HospitalShanghai Municipal Key Clinical SpecialtyInstitute of Embryo‐Fetal Original Adult DiseaseSchool of MedicineShanghai Jiao Tong UniversityShanghai200030China
| | - Chuanxia Chen
- School of Materials Science and EngineeringUniversity of JinanJinanShandong250022China
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Profiling Plasma Cytokines by A CRISPR-ELISA Assay for Early Detection of Lung Cancer. J Clin Med 2022; 11:jcm11236923. [PMID: 36498497 PMCID: PMC9740838 DOI: 10.3390/jcm11236923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 11/17/2022] [Accepted: 11/22/2022] [Indexed: 11/25/2022] Open
Abstract
Cytokines play crucial roles in tumorigenesis and are potential biomarkers for cancer diagnosis. An Enzyme-linked Immunosorbent Assay (ELISA) is commonly used to measure cytokines but has a low sensitivity and can only detect a single target at a time. CRISPR-Associated Proteins (Cas) can ultra-sensitively and specifically detect nucleic acids and is revolutionizing molecular diagnostics. Here, we design a microplate-based CRISPR-ELISA assay to simultaneously profile multiple cytokines, in which antibodies are coupled with ssDNA to form antibody-ssDNA complexes that bridges CRISPR/Cas12a and ELISA reactions. The ssDNA triggers the Cas12a collateral cleavage activity and releases the fluorescent reporters to generate amplified fluorescent signals in the ELISA detection of cytokines. The CRISPR-ELISA assay can simultaneously measure multiple cytokines with a significantly higher sensitivity compared with conventional ELISA. Using the CRISPR-ELISA assay to profile plasma cytokines in 127 lung cancer patients and 125 cancer-free smokers, we develop a panel of plasma cytokine biomarkers (IL-6, IL-8, and IL-10) for early detection of the disease, with 80.6% sensitivity and 82.0% specificity. The CRISPR-ELISA assay may provide a new approach to the discovery of cytokine biomarkers for early lung cancer detection.
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Li X, Zhang H, Zhang J, Song Y, Shi X, Zhao C, Wang J. Diagnostic accuracy of CRISPR technology for detecting SARS-CoV-2: a systematic review and meta-analysis. Expert Rev Mol Diagn 2022; 22:655-663. [PMID: 35902079 DOI: 10.1080/14737159.2022.2107425] [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: 11/04/2022]
Abstract
OBJECTIVE To evaluate the diagnostic accuracy of CRISPR-Cas technology for SARS-CoV-2. METHODS In our study, RT-qPCR is defined as the reference standard. Data was collected independently and assessed by Quality Assessment of Diagnostic Accuracy Studies (QUADAS)-2 tool. A bivariate model for pooling was employed to estimates of sensitivity and specificity and subgroups analysis was used to explore heterogeneity. RESULTS 2264 samples and 6 countries from 28 articles were extracted for evaluating the accuracy of CRISPR technology for diagnosing SARS-CoV-2. The overall pooled sensitivity and specificity of CRISPR technology were 0.98 (95% CI: 0.95-0.99) and 1.0 (95% CI: 0.98-1.00), respectively. As for literature quality assessment, high risks in patient selection bias and unclear risk of index test bias may affect accuracy. Subgroup analysis draws significant conclusions. CRISPR-Cas12 is more applicable for molecular diagnostics for its active editing characteristics. RT-LAMP and RT-RPA are usually used for pre-amplification and combined with fluorescence detection to output results quantitatively. Nasopharyngeal swabs and dual-genes perform greatly in our study. CONCLUSION The results concluded from all studies showed that CRISPR technology is a promising and accurate molecular method for detecting SARS-CoV-2. Standard methods including comparable sample material, patient selection, operating procedure and operators should be established.
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Affiliation(s)
- Xin Li
- School of Public Health, Jilin University, Changchun 130021, China
| | - Huiling Zhang
- School of Public Health, Jilin University, Changchun 130021, China
| | - Jing Zhang
- School of Public Health, Jilin University, Changchun 130021, China
| | - Yang Song
- School of Public Health, Jilin University, Changchun 130021, China
| | - Xuening Shi
- School of Public Health, Jilin University, Changchun 130021, China
| | - Chao Zhao
- School of Public Health, Jilin University, Changchun 130021, China
| | - Juan Wang
- School of Public Health, Jilin University, Changchun 130021, China
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Neugebauer M, Grundmann CE, Lehnert M, von Stetten F, Früh SM, Süss R. Analyzing siRNA Concentration, Complexation and Stability in Cationic Dendriplexes by Stem-Loop Reverse Transcription-qPCR. Pharmaceutics 2022; 14:pharmaceutics14071348. [PMID: 35890243 PMCID: PMC9320460 DOI: 10.3390/pharmaceutics14071348] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/15/2022] [Accepted: 06/20/2022] [Indexed: 02/01/2023] Open
Abstract
RNA interference (RNAi) is a powerful therapeutic approach for messenger RNA (mRNA) level regulation in human cells. RNAi can be triggered by small interfering RNAs (siRNAs) which are delivered by non-viral carriers, e.g., dendriplexes. siRNA quantification inside carriers is essential in drug delivery system development. However, current siRNA measuring methods either are not very sensitive, only semi-quantitative or not specific towards intact target siRNA sequences. We present a novel reverse transcription real-time PCR (RT-qPCR)-based application for siRNA quantification in drug formulations. It enables specific and highly sensitive quantification of released, uncomplexed target siRNA and thus also indirect assessment of siRNA stability and concentration inside dendriplexes. We show that comparison with a dilution series allows for siRNA quantification, exclusively measuring intact target sequences. The limit of detection (LOD) was 4.2 pM (±0.2 pM) and the limit of quantification (LOQ) 77.8 pM (±13.4 pM) for uncomplexed siRNA. LOD and LOQ of dendriplex samples were 31.6 pM (±0 pM) and 44.4 pM (±9.0 pM), respectively. Unspecific non-target siRNA sequences did not decrease quantification accuracy when present in samples. As an example of use, we assessed siRNA complexation inside dendriplexes with varying nitrogen-to-phosphate ratios. Further, protection of siRNA inside dendriplexes from RNase A degradation was quantitatively compared to degradation of uncomplexed siRNA. This novel application for quantification of siRNA in drug delivery systems is an important tool for the development of new siRNA-based drugs and quality checks including drug stability measurements.
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Affiliation(s)
- Maximilian Neugebauer
- Hahn-Schickard, Georges-Koehler-Allee 103, 79110 Freiburg, Germany; (M.L.); (F.v.S.); (S.M.F.)
- Laboratory for MEMS Applications, IMTEK—Department of Microsystems Engineering, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, Germany
- Correspondence:
| | - Clara E. Grundmann
- Department of Pharmaceutical Technology and Biopharmacy, Institute of Pharmaceutical Sciences, University of Freiburg, Sonnenstr. 5, 79104 Freiburg, Germany; (C.E.G.); (R.S.)
| | - Michael Lehnert
- Hahn-Schickard, Georges-Koehler-Allee 103, 79110 Freiburg, Germany; (M.L.); (F.v.S.); (S.M.F.)
| | - Felix von Stetten
- Hahn-Schickard, Georges-Koehler-Allee 103, 79110 Freiburg, Germany; (M.L.); (F.v.S.); (S.M.F.)
- Laboratory for MEMS Applications, IMTEK—Department of Microsystems Engineering, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, Germany
| | - Susanna M. Früh
- Hahn-Schickard, Georges-Koehler-Allee 103, 79110 Freiburg, Germany; (M.L.); (F.v.S.); (S.M.F.)
- Laboratory for MEMS Applications, IMTEK—Department of Microsystems Engineering, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, Germany
| | - Regine Süss
- Department of Pharmaceutical Technology and Biopharmacy, Institute of Pharmaceutical Sciences, University of Freiburg, Sonnenstr. 5, 79104 Freiburg, Germany; (C.E.G.); (R.S.)
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