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Zhang T, Tang J, Zhang Y, Jin Y, Lin Z, Chen J, Huang J, Mo M. Establishment of a rapid real-time fluorescence-based recombinase-aided amplification method for detection of avian infectious bronchitis virus. J Virol Methods 2024; 328:114955. [PMID: 38768869 DOI: 10.1016/j.jviromet.2024.114955] [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: 11/25/2023] [Revised: 05/15/2024] [Accepted: 05/16/2024] [Indexed: 05/22/2024]
Abstract
Infectious bronchitis (IB) is an acute, highly contagious contact respiratory disease of chickens caused by infectious bronchitis virus (IBV). IBV is very prone to mutation, which brings great difficulties to the prevention and control of the disease. Therefore, there is a pressing need for a method that is fast, sensitive, specific, and convenient for detecting IBV. In this study, a real-time fluorescence-based recombinase-aided amplification (RF-RAA) method was established. Primers and probe were designed based on the conserved regions of the IBV M gene and the reaction concentrations were optimized, then the specificity, sensitivity, and reproducibility of this assay were tested. The results showed that the RF-RAA method could be completed at 39℃ within 20 min, during which the results could be interpreted visually in real-time. The RF-RAA method had good specificity, no cross-reaction with common poultry pathogens, and it detected a minimum concentration of template of 2 copies/μL for IBV. Besides, its reproducibility was stable. A total of 144 clinical samples were tested by RF-RAA and real-time quantitative PCR (qPCR), 132 samples of which were positive and 12 samples were negative, and the coincidence rate of the two methods was 100 %. In conclusion, the developed RF-RAA detection method is rapid, specific, sensitive, reproducible, and convenient, which can be utilized for laboratory detection and clinical diagnosis of IBV.
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Affiliation(s)
- Taoni Zhang
- College of Animal Science and Technology, Guangxi University, Nanning 530004, China
| | - Jinwen Tang
- College of Animal Science and Technology, Guangxi University, Nanning 530004, China
| | - Yu Zhang
- College of Animal Science and Technology, Guangxi University, Nanning 530004, China
| | - Yinghao Jin
- College of Animal Science and Technology, Guangxi University, Nanning 530004, China
| | - Zixue Lin
- College of Animal Science and Technology, Guangxi University, Nanning 530004, China
| | - Jiming Chen
- College of Animal Science and Technology, Guangxi University, Nanning 530004, China
| | - Jianni Huang
- College of Animal Science and Technology, Guangxi University, Nanning 530004, China
| | - Meilan Mo
- College of Animal Science and Technology, Guangxi University, Nanning 530004, China; Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning 530004, China; Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Nanning 530004, China; Guangxi Colleges and Universities Key Laboratory of Prevention and Control for Animal Disease, Nanning 530004, China.
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Xia W, Chen Y, Ding X, Liu X, Lu H, Guo C, Zhang H, Wu Z, Huang J, Fan Z, Yu S, Sun H, Zhu S, Wu Z. Rapid and Visual Detection of Type 2 Porcine Reproductive and Respiratory Syndrome Virus by Real-Time Fluorescence-Based Reverse Transcription Recombinase-Aided Amplification. Viruses 2022; 14:v14112526. [PMID: 36423135 PMCID: PMC9699348 DOI: 10.3390/v14112526] [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: 10/16/2022] [Revised: 11/09/2022] [Accepted: 11/11/2022] [Indexed: 11/18/2022] Open
Abstract
Porcine reproductive and respiratory syndrome (PRRS) is one of the most important diseases that has brought significant economic losses to the swine industry worldwide. Rapid and accurate PRRS virus (PRRSV) detection is one of the key factors for PRRS prevention and control. This study developed a real-time fluorescence-based reverse transcription recombinase-aided amplification (RF-RT-RAA) method for type 2 PRRSV (PRRSV-2) detection. The RF-RT-RAA assay could be performed at 42 °C for 20 min with the optimal primers and a probe. RF-RT-RAA results could be monitored using real-time fluorescence read-out or visually observed with the naked eye using a portable blue light transilluminator. The method had a strong specificity; no cross-reaction was identified with the detected common swine viruses. Moreover, the technique yielded high sensitivity with the lowest detection limit of 101 copies/μL and exhibited good repeatability and reproductively with the coefficients of variation (CV) less than 10%. Eighty-seven clinical samples were tested using RF-RT-RAA and a commercial PRRSV-2 RT-qPCR detection kit. The coincidence rate was 100% between RF-RT-RAA (real-time fluorescence read-out) and RT-qPCR, and 97.7% between RF-RT-RAA (visually observed) and RT-qPCR. The RF-RT-RAA assay provides a new method for rapid and visual detection of PRRSV-2.
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Affiliation(s)
- Wenlong Xia
- Jiangsu Key Laboratory for Bioresources of Saline Soils, School of Ocean and Biological Engineering, Yancheng Teachers University, Yancheng 224007, China
- Correspondence: (W.X.); (Z.W.)
| | - Yao Chen
- Jiangsu Key Laboratory for Bioresources of Saline Soils, School of Ocean and Biological Engineering, Yancheng Teachers University, Yancheng 224007, China
| | - Xue Ding
- Jiangsu Key Laboratory for Bioresources of Saline Soils, School of Ocean and Biological Engineering, Yancheng Teachers University, Yancheng 224007, China
| | - Xiaoming Liu
- College of Veterinary Medicine, Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, China
| | - Huipeng Lu
- Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Jiangsu Agri-Animal Husbandry Vocational College, Taizhou 225300, China
| | - Changming Guo
- Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Jiangsu Agri-Animal Husbandry Vocational College, Taizhou 225300, China
| | - Hua Zhang
- School of Pharmacy, Yancheng Teachers University, Yancheng 224007, China
- Jiangsu Province Engineering Research Center of Tumor Targeted Nano Diagnostic and Therapeutic Materials, Yancheng Teachers University, Yancheng 224007, China
| | - Zhijun Wu
- School of Pharmacy, Yancheng Teachers University, Yancheng 224007, China
- Jiangsu Province Engineering Research Center of Tumor Targeted Nano Diagnostic and Therapeutic Materials, Yancheng Teachers University, Yancheng 224007, China
| | - Jing Huang
- Jiangsu Key Laboratory for Bioresources of Saline Soils, School of Ocean and Biological Engineering, Yancheng Teachers University, Yancheng 224007, China
| | - Zhongjun Fan
- Jiangsu Key Laboratory for Bioresources of Saline Soils, School of Ocean and Biological Engineering, Yancheng Teachers University, Yancheng 224007, China
| | - Shupei Yu
- Yancheng Animal Husbandry and Veterinary Station, Yancheng 224001, China
| | - Huaichang Sun
- College of Veterinary Medicine, Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, China
| | - Shanyuan Zhu
- Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Jiangsu Agri-Animal Husbandry Vocational College, Taizhou 225300, China
| | - Zhi Wu
- Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Jiangsu Agri-Animal Husbandry Vocational College, Taizhou 225300, China
- Correspondence: (W.X.); (Z.W.)
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