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Liao JY, Feng XY, Zhang JX, Yang TD, Zhan MX, Zeng YM, Huang WY, Lian HB, Ke L, Cai SS, Zhang NF, Fang JW, Cai XY, Chen JD, Lin GY, Lin LY, Chen WZ, Liu YY, Huang FF, Lin CX, Lin M. RT-RPA- PfAgo detection platform for one-tube simultaneous typing diagnosis of human respiratory syncytial virus. Front Cell Infect Microbiol 2024; 14:1419949. [PMID: 39119294 PMCID: PMC11306018 DOI: 10.3389/fcimb.2024.1419949] [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: 04/19/2024] [Accepted: 06/17/2024] [Indexed: 08/10/2024] Open
Abstract
Human respiratory syncytial virus (HRSV) is the most prevalent pathogen contributing to acute respiratory tract infections (ARTI) in infants and young children and can lead to significant financial and medical costs. Here, we developed a simultaneous, dual-gene and ultrasensitive detection system for typing HRSV within 60 minutes that needs only minimum laboratory support. Briefly, multiplex integrating reverse transcription-recombinase polymerase amplification (RT-RPA) was performed with viral RNA extracted from nasopharyngeal swabs as a template for the amplification of the specific regions of subtypes A (HRSVA) and B (HRSVB) of HRSV. Next, the Pyrococcus furiosus Argonaute (PfAgo) protein utilizes small 5'-phosphorylated DNA guides to cleave target sequences and produce fluorophore signals (FAM and ROX). Compared with the traditional gold standard (RT-qPCR) and direct immunofluorescence assay (DFA), this method has the additional advantages of easy operation, efficiency and sensitivity, with a limit of detection (LOD) of 1 copy/μL. In terms of clinical sample validation, the diagnostic accuracy of the method for determining the HRSVA and HRSVB infection was greater than 95%. This technique provides a reliable point-of-care (POC) testing for the diagnosis of HRSV-induced ARTI in children and for outbreak management, especially in resource-limited settings.
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Affiliation(s)
- Jia-Yu Liao
- Department of Pediatrics, Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Xue-Yong Feng
- Department of Pediatrics, Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Jie-Xiu Zhang
- Shantou University Medical College, Shantou, Guangdong, China
| | - Tian-Dan Yang
- Department of Pediatrics, Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Min-Xuan Zhan
- Department of Pediatrics, Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Yong-Mei Zeng
- Department of Pediatrics, Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Wei-Yi Huang
- School of Food Engineering and Biotechnology, Hanshan Normal University, Chaozhou, Guangdong, China
| | - Hao-Bin Lian
- Department of Pediatrics, Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Lin Ke
- Department of Pediatrics, Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Si-Si Cai
- Department of Pediatrics, Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Nan-Fei Zhang
- Department of Pediatrics, Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Jin-Wen Fang
- Department of Pediatrics, Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Xiao-Ying Cai
- Department of Pediatrics, Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Jun-Duo Chen
- Department of Pediatrics, Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Guang-Yu Lin
- Department of Pediatrics, Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Li-Yun Lin
- School of Food Engineering and Biotechnology, Hanshan Normal University, Chaozhou, Guangdong, China
| | - Wei-Zhong Chen
- Department of Medical Laboratory, Chaozhou People’s Hospital Affiliated to Shantou University Medical College, Chaozhou, Guangdong, China
| | - Yu-Yan Liu
- School of Food Engineering and Biotechnology, Hanshan Normal University, Chaozhou, Guangdong, China
| | - Fei-Fei Huang
- School of Food Engineering and Biotechnology, Hanshan Normal University, Chaozhou, Guangdong, China
| | - Chuang-Xing Lin
- Department of Pediatrics, Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Min Lin
- School of Food Engineering and Biotechnology, Hanshan Normal University, Chaozhou, Guangdong, China
- School of Laboratory Medicine, Youjiang Medical University for Nationalities, Baise, Guangxi, China
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Tan M, Liao C, Liang L, Yi X, Zhou Z, Wei G. Recent advances in recombinase polymerase amplification: Principle, advantages, disadvantages and applications. Front Cell Infect Microbiol 2022; 12:1019071. [PMID: 36519130 PMCID: PMC9742450 DOI: 10.3389/fcimb.2022.1019071] [Citation(s) in RCA: 51] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Accepted: 11/03/2022] [Indexed: 11/29/2022] Open
Abstract
After the outbreak of SARS-CoV-2, nucleic acid testing quickly entered people's lives. In addition to the polymerase chain reaction (PCR) which was commonly used in nucleic acid testing, isothermal amplification methods were also important nucleic acid testing methods. Among several common isothermal amplification methods like displaced amplification, rolling circle amplification, and so on, recombinase polymerase amplification (RPA) was recently paid more attention to. It had the advantages like a simple operation, fast amplification speed, and reaction at 37-42°C, et al. So it was very suitable for field detection. However, there were still some disadvantages to RPA. Herein, our review mainly summarized the principle, advantages, and disadvantages of RPA. The specific applications of RPA in bacterial detection, fungi detection, virus detection, parasite detection, drug resistance gene detection, genetically modified food detection, and SARS-CoV-2 detection were also described. It was hoped that the latest research progress on RPA could be better delivered to the readers who were interested in RPA.
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Gong L, Wang X, Li Z, Huang G, Zhang W, Nie J, Wu C, Liu D. Integrated Trinity Test With RPA-CRISPR/Cas12a-Fluorescence for Real-Time Detection of Respiratory Syncytial Virus A or B. Front Microbiol 2022; 13:819931. [PMID: 35432263 PMCID: PMC9008541 DOI: 10.3389/fmicb.2022.819931] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 03/04/2022] [Indexed: 11/30/2022] Open
Abstract
Respiratory syncytial virus (RSV) is a common virus that causes respiratory infection, especially severe respiratory infection in infants and young children, the elderly people over 65 years old, and people with weak immunity. Currently, RSV infection has no effective vaccine and antiviral treatment. The number of deaths due to RSV infection increases every year. Moreover, RSV A infection occurs in a large number and has severe clinical symptoms and complications than RSV B infection. Therefore, the development of a simple, rapid, and inexpensive detection method with high amplification efficiency, high sensitivity, and specificity is very important for the diagnosis of RSV A or RSV B infection, which can help in the early clinical medication and prevent the progress of the disease. Therefore, we developed an integrated trinity test with an RPA-CRISPR/Cas12a-fluorescence (termed IT-RAISE) assay system to detect RSV A or RSV B. The characteristic of the IT-RAISE system is that after target recognition, the reporter single-stranded DNA (ssDNA) is cleaved by Cas12a that is activated by different crRNAs to detect the generated fluorescent signal. This method is simple and helps in adding all reagents rapidly. It is a high-sensitive method that can detect 1.38 × 101 copies/μl of the target sequences, and it can distinguish RSV A or RSV B infection within 37 min. In addition, clinical specimens were detected for IT-RAISE system. It was found that the sensitivity and specificity of RSV A were 73.08 and 90%, respectively, and those of RSV B were 42.86 and 93.33%, respectively. The cost of ONE specimen for IT-RAISE system was approximately $ 2.6 (excluding rapid RNA extraction and reverse transcription costs). IT-RAISE system has good clinical application prospects for detecting RSV A or RSV B infection; it is a simple, rapid, and inexpensive method with high amplification efficiency, high sensitivity, and high specificity. The IT-RAISE system might also detect other viral or bacterial infections.
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Affiliation(s)
- Ling Gong
- The First Clinical Medical College, Jinan University, Guangzhou, China
- Department of Respiratory Medicine, The Third Affiliated Hospital of Zunyi Medical University, The First People’s Hospital of Zunyi, Zunyi, China
| | - Xiaowen Wang
- Department of Respiratory Medicine, The Third Affiliated Hospital of Zunyi Medical University, The First People’s Hospital of Zunyi, Zunyi, China
| | - Zhu Li
- Department of Respiratory Medicine, The Third Affiliated Hospital of Zunyi Medical University, The First People’s Hospital of Zunyi, Zunyi, China
| | - Guichuan Huang
- Department of Respiratory Medicine, The Third Affiliated Hospital of Zunyi Medical University, The First People’s Hospital of Zunyi, Zunyi, China
| | - Wei Zhang
- Department of Respiratory Medicine, The Third Affiliated Hospital of Zunyi Medical University, The First People’s Hospital of Zunyi, Zunyi, China
| | - Jin Nie
- Department of Respiratory Medicine, The Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Chunyan Wu
- Department of Respiratory Medicine, The Third Affiliated Hospital of Zunyi Medical University, The First People’s Hospital of Zunyi, Zunyi, China
| | - Daishun Liu
- Department of Basic Medicine, Zunyi Medical University, Zunyi, China
- *Correspondence: Daishun Liu, , orcid.org/0000-0002-8889-2909
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Banerjee S, Biswas SK, Kedia N, Sarkar R, De A, Mitra S, Roy S, Chowdhury R, Samaddar S, Bandopadhyay A, Banerjee I, Jana S, Goswami R, Dutta S, Chawla-Sarkar M, Chakraborty S, Mondal A. Piecewise Isothermal Nucleic Acid Testing (PINAT) for Infectious Disease Detection with Sample-to-Result Integration at the Point-of-Care. ACS Sens 2021; 6:3753-3764. [PMID: 34582171 DOI: 10.1021/acssensors.1c01573] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We developed a piecewise isothermal nucleic acid test (PINAT) as a platform technology for diagnosing pathogen-associated infections, empowered by an illustrative novel methodology that embeds an exclusive DNA-mediated specific probing reaction with the backbone of an isothermal reverse transcription cum amplification protocol for detecting viral RNA. In a point-of-care format, this test is executable in a unified single-step, single-chamber procedure, leading to seamless sample-to-result integration in an inexpensive, scalable, pre-programmable, and customizable portable device, with mobile-app-integrated interpretation and analytics involving minimal manually operative procedures. The test exhibited a high sensitivity and specificity of detection when assessed using 200 double-blind patient samples for detecting SARS-CoV-2 infection by the Indian Council of Medical Research (ICMR), and subsequently using 170 double-blind patient samples in a point-of-care format outside controlled laboratory settings as performed by unskilled technicians in an organized clinical trial. We also established its efficacy in detecting Influenza A infection by performing the diagnosis at the point of collection with uncompromised detection rigor. The envisaged trade-off between advanced laboratory-based molecular diagnostic procedures and the elegance of common rapid tests renders the method ideal for deployment in resource-limited settings towards catering the needs of the underserved.
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Affiliation(s)
- Saptarshi Banerjee
- School of Bioscience, Indian Institute of Technology, Kharagpur 721302, India
| | - Sujay Kumar Biswas
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur 721302, India
| | - Nandita Kedia
- School of Bioscience, Indian Institute of Technology, Kharagpur 721302, India
| | - Rakesh Sarkar
- ICMR-National Institute of Cholera and Enteric Diseases, Kolkata 700010, India
| | - Aratrika De
- School of Bioscience, Indian Institute of Technology, Kharagpur 721302, India
| | - Suvrotoa Mitra
- ICMR-National Institute of Cholera and Enteric Diseases, Kolkata 700010, India
| | - Subhanita Roy
- Department of Mechanical Engineering, Indian Institute of Technology, Kharagpur 721302, India
| | - Ranjini Chowdhury
- Department of Mechanical Engineering, Indian Institute of Technology, Kharagpur 721302, India
| | | | - Aditya Bandopadhyay
- Department of Mechanical Engineering, Indian Institute of Technology, Kharagpur 721302, India
| | - Indranath Banerjee
- B.C. Roy Technology Hospital, Indian Institute of Technology, Kharagpur 721302, India
| | - Subhasis Jana
- Purba Medinipur District Hospital, Tamluk, Purba Medinipur, West Bengal 721636, India
| | - Ritobrata Goswami
- School of Bioscience, Indian Institute of Technology, Kharagpur 721302, India
| | - Shanta Dutta
- ICMR-National Institute of Cholera and Enteric Diseases, Kolkata 700010, India
| | - Mamta Chawla-Sarkar
- ICMR-National Institute of Cholera and Enteric Diseases, Kolkata 700010, India
| | - Suman Chakraborty
- Department of Mechanical Engineering, Indian Institute of Technology, Kharagpur 721302, India
| | - Arindam Mondal
- School of Bioscience, Indian Institute of Technology, Kharagpur 721302, India
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5
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A simple and rapid method for fish sex identification based on recombinase-aided amplification and its use in Cynoglossus semilaevis. Sci Rep 2021; 11:10429. [PMID: 34001931 PMCID: PMC8128863 DOI: 10.1038/s41598-021-89571-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 04/21/2021] [Indexed: 01/17/2023] Open
Abstract
Fish sex identification is a basic technique of great importance for both fish genetic studies and fisheries. Due to the sexual reversal phenomenon in many fish species, a simple and rapid molecular identification method for fish genetic sex is urgently needed to suit versatile detection scenarios, such as point-of-need applications. In this study, we took Cynoglossus semilaevis as an example, established a recombinase-aided amplification (RAA)-based method for sex identification, and combined the RAA-detection with two result visualization approaches with distinct features, capillary electrophoresis (CE) and lateral flow dipstick (LFD). Specific primers and probe were designed to specifically detect the sex chromosome W of C. semilaevis in order to distinguish the genetic sex between males, pseudo-males and females. To evaluate the performance of our methods, the genetic sex for twenty-eight males, sixty-eight pseudo-males and fifty-four females were examined with the RAA-based method and classical PCR-based genotyping method, demonstrating the consistent results of sex identification between both methods. The RAA-LFD method is operationally simple, rapid (~ 30 min) and holds great potential for point-of-need applications of fish sex identification, including fishery fields. The method presented here could be effective for identifying fish gender with the ZW karyotype.
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Brazaca LC, Dos Santos PL, de Oliveira PR, Rocha DP, Stefano JS, Kalinke C, Abarza Muñoz RA, Bonacin JA, Janegitz BC, Carrilho E. Biosensing strategies for the electrochemical detection of viruses and viral diseases - A review. Anal Chim Acta 2021; 1159:338384. [PMID: 33867035 PMCID: PMC9186435 DOI: 10.1016/j.aca.2021.338384] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 03/03/2021] [Accepted: 03/04/2021] [Indexed: 02/06/2023]
Abstract
Viruses are the causing agents for many relevant diseases, including influenza, Ebola, HIV/AIDS, and COVID-19. Its rapid replication and high transmissibility can lead to serious consequences not only to the individual but also to collective health, causing deep economic impacts. In this scenario, diagnosis tools are of significant importance, allowing the rapid, precise, and low-cost testing of a substantial number of individuals. Currently, PCR-based techniques are the gold standard for the diagnosis of viral diseases. Although these allow the diagnosis of different illnesses with high precision, they still present significant drawbacks. Their main disadvantages include long periods for obtaining results and the need for specialized professionals and equipment, requiring the tests to be performed in research centers. In this scenario, biosensors have been presented as promising alternatives for the rapid, precise, low-cost, and on-site diagnosis of viral diseases. This critical review article describes the advancements achieved in the last five years regarding electrochemical biosensors for the diagnosis of viral infections. First, genosensors and aptasensors for the detection of virus and the diagnosis of viral diseases are presented in detail regarding probe immobilization approaches, detection methods (label-free and sandwich), and amplification strategies. Following, immunosensors are highlighted, including many different construction strategies such as label-free, sandwich, competitive, and lateral-flow assays. Then, biosensors for the detection of viral-diseases-related biomarkers are presented and discussed, as well as point of care systems and their advantages when compared to traditional techniques. Last, the difficulties of commercializing electrochemical devices are critically discussed in conjunction with future trends such as lab-on-a-chip and flexible sensors.
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Affiliation(s)
- Laís Canniatti Brazaca
- Instituto de Química de São Carlos, Universidade de São Paulo, São Carlos, SP, 13566-590, Brazil; Instituto Nacional de Ciência e Tecnologia de Bioanalítica-INCTBio, Campinas, SP, 13083-970, Brazil.
| | - Pãmyla Layene Dos Santos
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040-900, Brazil
| | - Paulo Roberto de Oliveira
- Departamento de Ciências Naturais, Matemática e Educação, Universidade Federal de São Carlos, Araras, SP, 13600-970, Brazil
| | - Diego Pessoa Rocha
- Instituto de Química, Universidade Federal de Uberlândia, Uberlândia, MG, 38400-902, Brazil
| | - Jéssica Santos Stefano
- Departamento de Ciências Naturais, Matemática e Educação, Universidade Federal de São Carlos, Araras, SP, 13600-970, Brazil; Instituto de Química, Universidade Federal de Uberlândia, Uberlândia, MG, 38400-902, Brazil
| | - Cristiane Kalinke
- Instituto de Química, Universidade Estadual de Campinas, Campinas, SP, 13083-859, Brazil
| | - Rodrigo Alejandro Abarza Muñoz
- Instituto Nacional de Ciência e Tecnologia de Bioanalítica-INCTBio, Campinas, SP, 13083-970, Brazil; Instituto de Química, Universidade Federal de Uberlândia, Uberlândia, MG, 38400-902, Brazil
| | - Juliano Alves Bonacin
- Instituto de Química, Universidade Estadual de Campinas, Campinas, SP, 13083-859, Brazil
| | - Bruno Campos Janegitz
- Departamento de Ciências Naturais, Matemática e Educação, Universidade Federal de São Carlos, Araras, SP, 13600-970, Brazil.
| | - Emanuel Carrilho
- Instituto de Química de São Carlos, Universidade de São Paulo, São Carlos, SP, 13566-590, Brazil; Instituto Nacional de Ciência e Tecnologia de Bioanalítica-INCTBio, Campinas, SP, 13083-970, Brazil.
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Brunauer A, Verboket RD, Kainz DM, von Stetten F, Früh SM. Rapid Detection of Pathogens in Wound Exudate via Nucleic Acid Lateral Flow Immunoassay. BIOSENSORS-BASEL 2021; 11:bios11030074. [PMID: 33800856 PMCID: PMC8035659 DOI: 10.3390/bios11030074] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 02/24/2021] [Accepted: 03/03/2021] [Indexed: 12/15/2022]
Abstract
The rapid detection of pathogens in infected wounds can significantly improve the clinical outcome. Wound exudate, which can be collected in a non-invasive way, offers an attractive sample material for the detection of pathogens at the point-of-care (POC). Here, we report the development of a nucleic acid lateral flow immunoassay for direct detection of isothermally amplified DNA combined with fast sample preparation. The streamlined protocol was evaluated using human wound exudate spiked with the opportunistic pathogen Pseudomonas aeruginosa that cause severe health issues upon wound colonization. A detection limit of 2.1 × 105 CFU per mL of wound fluid was achieved, and no cross-reaction with other pathogens was observed. Furthermore, we integrated an internal amplification control that excludes false negative results and, in combination with the flow control, ensures the validity of the test result. The paper-based approach with only three simple hands-on steps has a turn-around time of less than 30 min and covers the complete analytical process chain from sample to answer. This newly developed workflow for wound fluid diagnostics has tremendous potential for reliable pathogen POC testing and subsequent target-oriented therapy.
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Affiliation(s)
- Anna Brunauer
- Laboratory for MEMS Applications, IMTEK-Department of Microsystems Engineering, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, Germany
| | - René D Verboket
- Department of Trauma-, Hand- and Reconstructive Surgery, University Hospital Frankfurt, Johann Wolfgang Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany
| | - Daniel M Kainz
- Laboratory for MEMS Applications, IMTEK-Department of Microsystems Engineering, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, Germany
- Hahn-Schickard, Georges-Koehler-Allee 103, 79110 Freiburg, Germany
| | - Felix von Stetten
- Laboratory for MEMS Applications, IMTEK-Department of Microsystems Engineering, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, Germany
- Hahn-Schickard, Georges-Koehler-Allee 103, 79110 Freiburg, Germany
| | - Susanna M Früh
- Laboratory for MEMS Applications, IMTEK-Department of Microsystems Engineering, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, Germany
- Hahn-Schickard, Georges-Koehler-Allee 103, 79110 Freiburg, Germany
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8
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Pang Y, Cong F, Zhang X, Li H, Chang YF, Xie Q, Lin W. A recombinase polymerase amplification-based assay for rapid detection of Chlamydia psittaci. Poult Sci 2020; 100:585-591. [PMID: 33518111 PMCID: PMC7858173 DOI: 10.1016/j.psj.2020.11.031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 11/06/2020] [Accepted: 11/22/2020] [Indexed: 11/22/2022] Open
Abstract
Chlamydia psittaci is a zoonotic agent of systemic wasting disease in birds and atypical pneumonia in mammalians including humans, constituting a public health risk. A rapid diagnostic assay would be beneficial in screening C. psittaci in the field. In this study, we developed a probe-based recombinase polymerase amplification (RPA) assay for the rapid detection of C. psittaci. The specific primer pairs and probe targeting the conserved region of the outer membrane protein A gene were designed and applied to the real-time real-time RPA assay. The test can be performed at 39°C for 20 min using a portable device, with sensitivities approaching 100 copies of DNA molecules per reaction, with no cross-reaction with other pathogens. The clinical performance of the RPA assay was evaluated in an outbreak of C. psittaci and has high accuracy levels in field applications. The epidemic C. psittaci strains were classed into 2 genotypes: A and C. Collectively, this study offers a promising approach in screening for C. psittaci both in a laboratory setting and in field settings, and RPA can be used as an effective clinical test to monitor outbreaks in domestic fowl populations.
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Affiliation(s)
- Yanling Pang
- Guangdong Provincial Animal Virus Vector Vaccine Engineering Technology Research Center, College of Animal Science, South China Agricultural University, Guangzhou 510642, P.R. China
| | - Feng Cong
- Guangdong Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou 510633, P.R. China
| | - Xinheng Zhang
- Guangdong Provincial Animal Virus Vector Vaccine Engineering Technology Research Center, College of Animal Science, South China Agricultural University, Guangzhou 510642, P.R. China
| | - Hongxin Li
- Guangdong Provincial Animal Virus Vector Vaccine Engineering Technology Research Center, College of Animal Science, South China Agricultural University, Guangzhou 510642, P.R. China
| | - Yung-Fu Chang
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
| | - Qingmei Xie
- Guangdong Provincial Animal Virus Vector Vaccine Engineering Technology Research Center, College of Animal Science, South China Agricultural University, Guangzhou 510642, P.R. China
| | - Wencheng Lin
- Guangdong Provincial Animal Virus Vector Vaccine Engineering Technology Research Center, College of Animal Science, South China Agricultural University, Guangzhou 510642, P.R. China; Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA.
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9
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Han Y, Wang J, Zhang S, Wang J, Qin C, Han Y, Xu X. Rapid detection of norovirus genogroup II in clinical and environmental samples using recombinase polymerase amplification. Anal Biochem 2020; 605:113834. [PMID: 32712062 DOI: 10.1016/j.ab.2020.113834] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 06/13/2020] [Accepted: 06/15/2020] [Indexed: 12/13/2022]
Abstract
Norovirus is the leading cause of acute gastroenteritis all over the world, and the most genotype that causes its epidemic is norovirus genogroup II (NoVs GII). Rapid detection of NoVs is important because it can facilitate timely diagnosis. In this study, we designed universal specific primers and an Exo probe to hybridize to all genetic clusters of NoVs GII based on the conserved region at the ORF1-ORF2 junction of the genome. For the first time, we established a rapid and reliable reverse transcription recombinase polymerase amplification (RT-RPA) method for the detection of NoVs GII within 20 min. This method can specifically amplify NoVs GII, and the detection limit was as low as 1.66 × 102 copies/μL. The method was validated in terms of LOD, accuracy, and specificity. We tested 55 real samples including foods, water, and feces. The results showed a sensitivity of 96% and specificity of 100% to NoVs GII. The whole procedure can be operated by a mobile suitcase laboratory, which is useful for resource-limited diagnostic laboratories. This novel real-time RT-RPA assay is an accurate tool for point-of-care testing of NoVs, providing practical support for norovirus-caused disease diagnosis and prevention.
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Affiliation(s)
- Yanzhen Han
- School of Public Health, And Key Laboratory of Environment and Human Health of Hebei Medical University, Shijiazhuang, 050017, China
| | - Jianchang Wang
- Technology Center of Shijiazhuang Customs, Shijiazhuang, 050051, China
| | - Shuhong Zhang
- Microbiological Laboratory, Hebei Provincial Center for Disease Control and Prevention, Shijiazhuang, 050021, China
| | - Jinfeng Wang
- Technology Center of Shijiazhuang Customs, Shijiazhuang, 050051, China
| | - Chen Qin
- Clinical Laboratory of Hebei General Hospital, Shijiazhuang, 050051, China
| | - Yanqing Han
- Microbiological Laboratory, Hebei Provincial Center for Disease Control and Prevention, Shijiazhuang, 050021, China
| | - Xiangdong Xu
- School of Public Health, And Key Laboratory of Environment and Human Health of Hebei Medical University, Shijiazhuang, 050017, China.
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