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Khan P, Aufdembrink LM, Adamala KP, Engelhart AE. PACRAT: pathogen detection with aptamer-observed cascaded recombinase polymerase amplification-in vitro transcription. RNA (NEW YORK, N.Y.) 2024; 30:891-900. [PMID: 38637016 PMCID: PMC11182012 DOI: 10.1261/rna.079891.123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 04/04/2024] [Indexed: 04/20/2024]
Abstract
The SARS-CoV-2 pandemic underscored the need for early, rapid, and widespread pathogen detection tests that are readily accessible. Many existing rapid isothermal detection methods use the recombinase polymerase amplification (RPA), which exhibits polymerase chain reaction (PCR)-like sensitivity, specificity, and even higher speed. However, coupling RPA to other enzymatic reactions has proven difficult. For the first time, we demonstrate that with tuning of buffer conditions and optimization of reagent concentrations, RPA can be cascaded into an in vitro transcription reaction, enabling detection using fluorescent aptamers in a one-pot reaction. We show that this reaction, which we term PACRAT (pathogen detection with aptamer-observed cascaded recombinase polymerase amplification-in vitro transcription) can be used to detect SARS-CoV-2 RNA with single-copy detection limits, Escherichia coli with single-cell detection limits, and 10-min detection times. Further demonstrating the utility of our one-pot, cascaded amplification system, we show PACRAT can be used for multiplexed detection of the pathogens SARS-CoV-2 and E. coli, along with multiplexed detection of two variants of SARS-CoV-2.
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Affiliation(s)
- Pavana Khan
- Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - Lauren M Aufdembrink
- Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - Katarzyna P Adamala
- Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, Minnesota 55455, USA
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - Aaron E Engelhart
- Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, Minnesota 55455, USA
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, Minnesota 55455, USA
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Sharma V, Takamura H, Biyani M, Honda R. Real-Time On-Site Monitoring of Viruses in Wastewater Using Nanotrap ® Particles and RICCA Technologies. BIOSENSORS 2024; 14:115. [PMID: 38534222 DOI: 10.3390/bios14030115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 02/10/2024] [Accepted: 02/17/2024] [Indexed: 03/28/2024]
Abstract
Wastewater-based epidemiology (WBE) is an effective and efficient tool for the early detection of infectious disease outbreaks in a community. However, currently available methods are laborious, costly, and time-consuming due to the low concentration of viruses and the presence of matrix chemicals in wastewater that may interfere with molecular analyses. In the present study, we designed a highly sensitive "Quick Poop (wastewater with fecal waste) Sensor" (termed, QPsor) using a joint approach of Nanotrap microbiome particles and RICCA (RNA Isothermal Co-Assisted and Coupled Amplification). Using QPsor, the WBE study showed a strong correlation with standard PEG concentrations and the qPCR technique. Using a closed format for a paper-based lateral flow assay, we were able to demonstrate the potential of our assay as a real-time, point-of-care test by detecting the heat-inactivated SARS-CoV-2 virus in wastewater at concentrations of 100 copies/mL and within one hour. As a proof-of-concept demonstration, we analyzed the presence of viral RNA of the SARS-CoV-2 virus and PMMoV in raw wastewater samples from wastewater treatment plants on-site and within 60 min. The results show that the QPsor method can be an effective tool for disease outbreak detection by combining an AI-enabled case detection model with real-time on-site viral RNA extraction and amplification, especially in the absence of intensive clinical laboratory facilities. The lab-free, lab-quality test capabilities of QPsor for viral prevalence and transmission in the community can contribute to the efficient management of pandemic situations.
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Affiliation(s)
- Vishnu Sharma
- BioSeeds Corporation, Ishikawa Create Labo-202, Asahidai 2-13, Nomi 923-1211, Ishikawa, Japan
| | - Hitomi Takamura
- Faculty of Geosciences and Civil Engineering, Kanazawa University, Kanazawa 920-1164, Ishikawa, Japan
| | - Manish Biyani
- BioSeeds Corporation, Ishikawa Create Labo-202, Asahidai 2-13, Nomi 923-1211, Ishikawa, Japan
| | - Ryo Honda
- Faculty of Geosciences and Civil Engineering, Kanazawa University, Kanazawa 920-1164, Ishikawa, Japan
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Wang Z, Wei P. Shifting the paradigm in RNA virus detection: integrating nucleic acid testing and immunoassays through single-molecule digital ELISA. Front Immunol 2024; 14:1331981. [PMID: 38235132 PMCID: PMC10791976 DOI: 10.3389/fimmu.2023.1331981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 12/12/2023] [Indexed: 01/19/2024] Open
Abstract
In this review article, we explore the characteristics of RNA viruses and their potential threats to humanity. We also provide a brief overview of the primary contemporary techniques used for the early detection of such viruses. After thoroughly analyzing the strengths and limitations of these methods, we highlight the importance of integrating nucleic acid testing with immunological assays in RNA virus detection. Although notable methodological differences between nucleic acid testing and immune assays pose challenges, the emerging single-molecule immunoassay-digital ELISA may be applied to technically integrate these techniques. We emphasize that the greatest value of digital ELISA is its extensive compatibility, which creates numerous opportunities for real-time, large-scale testing of RNA viruses. Furthermore, we describe the possible developmental trends of digital ELISA in various aspects, such as reaction carriers, identification elements, signal amplification, and data reading, thus revealing the remarkable potential of single-molecule digital ELISA in future RNA virus detection.
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Affiliation(s)
| | - Pei Wei
- Department of Immunology, Zunyi Medical University, Zhuhai, China
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Chen G, Yang N, Xu L, Lu S, Chen Z, Wu F, Chen J, Zhang X. Base-Stacking-Driven Catalytic Hairpin Assembly: A Nucleic Acid Amplification Reaction Using Electrode Interface as a "Booster" for SARS-CoV-2 Point-of-Care Testing. Anal Chem 2023; 95:15595-15605. [PMID: 37820038 DOI: 10.1021/acs.analchem.3c02577] [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: 10/13/2023]
Abstract
Electrochemical DNA (E-DNA) biosensors based on interface-mediated hybridization reactions are promising for point-of-care testing (POCT). However, the low efficiency of target recycle amplification and the steric hindrance at the electrode interface limit their sensing performance. Herein, we propose a base-stacking-driven catalytic hairpin assembly (BDCHA), a nucleic acid amplification reaction strategy, for POCT. The introduction of the base-stacking effect in this strategy increases the thermodynamic stability of the product, thereby effectively improving the recycling efficiency. Also, it enables the interface-mediated hybridization to maintain stability with even fewer bases in the reaction-binding domain, hence minimizing DNA secondary structure formation or intertwining at the electrode surface and ameliorating the steric hindrance limitation. The introduced base-stacking effect makes the electrode serve as a "booster" by integrating the advantages of homogeneous and heterogeneous reactions, giving BDCHA an increased reaction rate of about 20-fold, compared to the conventional catalytic hairpin assembly. As a proof of concept, our BDCHA was applied in constructing a portable E-DNA biosensor for the detection of a SARS-CoV-2 N gene sequence fragment. A simple 30 min one-pot incubation is required, and the results can be readily read on a smartphone, making it portable and user-friendly for POCT.
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Affiliation(s)
- Guanyu Chen
- Department of Pharmaceutical Analysis, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province 350122, P. R. China
- Innovative Drug Research Institute, Fujian Medical University, Fuzhou, Fujian Province 350122, P. R. China
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province 350122, P. R. China
| | - Ning Yang
- Department of Pharmaceutical Analysis, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province 350122, P. R. China
- Innovative Drug Research Institute, Fujian Medical University, Fuzhou, Fujian Province 350122, P. R. China
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province 350122, P. R. China
| | - Lilan Xu
- Department of Pharmaceutical Analysis, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province 350122, P. R. China
- Innovative Drug Research Institute, Fujian Medical University, Fuzhou, Fujian Province 350122, P. R. China
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province 350122, P. R. China
| | - Shi Lu
- Department of Pharmaceutical Analysis, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province 350122, P. R. China
- Innovative Drug Research Institute, Fujian Medical University, Fuzhou, Fujian Province 350122, P. R. China
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province 350122, P. R. China
| | - Zhuhua Chen
- Department of Pharmaceutical Analysis, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province 350122, P. R. China
- Innovative Drug Research Institute, Fujian Medical University, Fuzhou, Fujian Province 350122, P. R. China
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province 350122, P. R. China
| | - Fang Wu
- Department of Pharmaceutical Analysis, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province 350122, P. R. China
- Innovative Drug Research Institute, Fujian Medical University, Fuzhou, Fujian Province 350122, P. R. China
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province 350122, P. R. China
| | - Jinghua Chen
- Department of Pharmaceutical Analysis, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province 350122, P. R. China
- Innovative Drug Research Institute, Fujian Medical University, Fuzhou, Fujian Province 350122, P. R. China
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province 350122, P. R. China
| | - Xi Zhang
- Innovative Drug Research Institute, Fujian Medical University, Fuzhou, Fujian Province 350122, P. R. China
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province 350122, P. R. China
- Department of Clinical Pharmacy and Pharmacy Administration, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province 350122, P. R. China
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Cao G, Xiong Y, Shi M, Qiu Y, Bian Y, Nie F, Huo D, Hou C. The End of the Gray Zone: One-Tube Nested Recombinase Polymerase Amplification with Ultrahigh Signal-to-Noise Ratio for Precisely Detecting and Surveilling Viruses. Anal Chem 2023. [PMID: 37367936 DOI: 10.1021/acs.analchem.3c01609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
The samples were difficult to accurately determine positive or negative between 35 and 40 cycles by real-time quantitative PCR (qPCR) as the standard method. Here, we developed one-tube nested recombinase polymerase amplification (ONRPA) technology with CRISPR/Cas12a to overcome this difficulty. ONRPA broke the amplification plateau to substantially enhance the signals, which considerably improved the sensitivity and eliminated the problem of gray area. Using two pairs of primers one after another, it improved precision by lowering the probability of magnifying several target zones, which was completely free of contamination by nonspecific amplification. This was important in nucleic acid testing. Finally, by the CRISPR/Cas12a system as a terminal output, the approach achieved a high signal output as few as 2.169 copies·μL-1 in 32 min. ONRPA was 100-fold more sensitive than conventional RPA and 1000-fold compared to qPCR. ONRPA coupled with CRISPR/Cas12a will be an important and new promoter of RPA in clinical applications.
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Affiliation(s)
- Gaihua Cao
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing, Sichuan 400044, PR China
- State Key Laboratory of Cattle Diseases Detection (Chongqing) of Customs. Diagnosis and Testing Laboratory of Lumpy Skin Disease, Chongqing Customs Technology Center, Chongqing 400020, PR China
| | - Yifan Xiong
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing, Sichuan 400044, PR China
- State Key Laboratory of Cattle Diseases Detection (Chongqing) of Customs. Diagnosis and Testing Laboratory of Lumpy Skin Disease, Chongqing Customs Technology Center, Chongqing 400020, PR China
| | - Meimei Shi
- State Key Laboratory of Cattle Diseases Detection (Chongqing) of Customs. Diagnosis and Testing Laboratory of Lumpy Skin Disease, Chongqing Customs Technology Center, Chongqing 400020, PR China
| | - Yue Qiu
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing, Sichuan 400044, PR China
- State Key Laboratory of Cattle Diseases Detection (Chongqing) of Customs. Diagnosis and Testing Laboratory of Lumpy Skin Disease, Chongqing Customs Technology Center, Chongqing 400020, PR China
| | - Yong Bian
- Science and Technology Research Center of China Customs, Beijing 100730, PR China
| | - Fuping Nie
- State Key Laboratory of Cattle Diseases Detection (Chongqing) of Customs. Diagnosis and Testing Laboratory of Lumpy Skin Disease, Chongqing Customs Technology Center, Chongqing 400020, PR China
| | - Danqun Huo
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing, Sichuan 400044, PR China
| | - Changjun Hou
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing, Sichuan 400044, PR China
- Chongqing Key Laboratory of Bio-perception & Intelligent Information Processing, School of Microelectronics and Communication Engineering, Chongqing University, Chongqing, Sichuan 400044, PR China
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Maglaras P, Lilis I, Paliogianni F, Bravou V, Kalogianni DP. A Molecular Lateral Flow Assay for SARS-CoV-2 Quantitative Detection. BIOSENSORS 2022; 12:bios12110926. [PMID: 36354434 PMCID: PMC9687750 DOI: 10.3390/bios12110926] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/16/2022] [Accepted: 10/25/2022] [Indexed: 06/01/2023]
Abstract
Since the onset of the SARS-CoV-2 pandemic, several COVID-19 detection methods, both commercially available and in the lab, have been developed using different biomolecules as analytes and different detection and sampling methods with high analytical performance. Developing novel COVID-19 detection assays is an exciting research field, as rapid accurate diagnosis is a valuable tool to control the current pandemic, and also because the acquired knowledge can be deployed for facing future infectious outbreaks. We here developed a novel gold-nanoparticle-based nucleic acid lateral flow assay for the rapid, visual, and quantitative detection of SARS-CoV-2. Our method was based on the use of a DNA internal standard (competitor) for quantification and involved RT-PCR, the hybridization of biotinylated PCR products to specific oligonucleotide probes, and detection with a dual lateral flow assay using gold nanoparticles conjugated to an anti-biotin antibody as reporters. The developed test allowed for rapid detection by the naked eye and the simultaneous quantification of SARS-CoV-2 in nasopharyngeal swabs with high specificity, detectability, and repeatability. This novel molecular strip test for COVID-19 detection represents a simple, cost-effective, and accurate rapid test that is very promising to be used as a future diagnostic tool.
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Affiliation(s)
| | - Ioannis Lilis
- Department of Physiology, Faculty of Medicine, University of Patras, 26504 Rio, Patras, Greece
- Department of Microbiology, Medical School, University of Patras, 26504 Rio, Patras, Greece
| | - Fotini Paliogianni
- Department of Microbiology, Medical School, University of Patras, 26504 Rio, Patras, Greece
| | - Vasiliki Bravou
- Department of Anatomy-Histology-Embryology, Medical School, University of Patras, 26504 Rio, Patras, Greece
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