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Xing Y, Duan Z, Jiang Y, Li M, Lu W, Li J. Development and evaluation of a real-time multienzyme isothermal rapid amplification assay for rapid detection of Streptococcus pneumoniae. Sci Rep 2024; 14:17729. [PMID: 39085471 PMCID: PMC11291690 DOI: 10.1038/s41598-024-68524-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Accepted: 07/24/2024] [Indexed: 08/02/2024] Open
Abstract
Streptococcus pneumoniae is a significant pathogen causing infectious diseases, including pneumonia, otitis media, septicemia, and meningitis. The introduction of multivalent vaccines has coincided with a remarkable decrease in the number of pneumococcal-related deaths. Despite this, pneumococcal infection remains a significant cause of death among children under 5 years old and adults aged 65 or older at a global level. Therefore, early detection of S. pneumoniae infection is crucial for prognosis of pneumococcal infection patients. In this study, we evaluated the utility of a real-time multienzyme isothermal rapid amplification (MIRA) assay for detecting S. pneumoniae and other non-S. pneumoniae bacterial species. A primer-probe set targeting the S. pneumoniae lytA gene was designed, followed by optimization of parameters for the MIRA assay. At the same time, we validated the real-time MIRA assay for detecting S. pneumoniae using 79 clinical isolates identified by VITEK MS. The results showed a detection sensitivity and specificity of 100%. These results demonstrate that the designed real-time MIRA assay is a promising, rapid, simple, and reliable method for detecting S. pneumoniae infection in resource-limited areas. It has great potential for application in detecting not only S. pneumoniae but also other non-S. pneumoniae bacterial species.
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Affiliation(s)
- Yun Xing
- Department of Laboratory Medicine, Daping Hospital, Army Medical University, Chongqing, China
| | - Zhixiong Duan
- Department of Laboratory Medicine, The Chen Jia Qiao Hospital of Sha Ping Ba District of Chongqing City, Chongqing, China
| | - Yuansu Jiang
- Department of Laboratory Medicine, Daping Hospital, Army Medical University, Chongqing, China
| | - Min Li
- Department of Laboratory Medicine, Daping Hospital, Army Medical University, Chongqing, China
| | - Weiping Lu
- Department of Laboratory Medicine, Daping Hospital, Army Medical University, Chongqing, China.
| | - Jin Li
- Department of Laboratory Medicine, Daping Hospital, Army Medical University, Chongqing, China.
- Department of Laboratory Medicine, Chongqing Medical University Affiliated Dazu Hospital, Chongqing, China.
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Tian R, Xie F, Liu Y, Liu G, Li Q, Wang J, Zhang H, Dai L, Zhang W. Recombinase polymerase amplification combined with lateral flow biosensor for rapid visual detection of Clostridium perfringens in chicken meat and milk. Front Vet Sci 2024; 11:1395188. [PMID: 39011320 PMCID: PMC11246993 DOI: 10.3389/fvets.2024.1395188] [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: 03/03/2024] [Accepted: 06/20/2024] [Indexed: 07/17/2024] Open
Abstract
Aims Clostridium perfringens is one of the major anaerobic pathogen causing food poisoning and animal enteritis. With the rise of antibiotic resistance and the restrictions of the use of antibiotic growth promoting agents (AGPs) in farming, Clostridium enteritis and food contamination have become more common. It is time-consuming and labor-intensive to confirm the detection by standard culture methods, and it is necessary to develop on-site rapid detection tools. In this study, a combination of recombinase polymerase amplification (RPA) and lateral flow biosensor (LFB) was used to visually detect C. perfringens in chicken meat and milk. Methods and results Two sets of primers were designed for the plc gene of C. perfringens, and the amplification efficiency and specificity of the primers. Selection of primers produces an amplified fragment on which the probe is designed. The probe was combined with the lateral flow biosensor (LFB). The reaction time and temperature of RPA-LFB assay were optimized, and the sensitivity of the assay was assessed. Several common foodborne pathogens were selected to test the specificity of the established method. Chicken and milk samples were artificially inoculated with different concentrations (1 × 102 CFU/mL to 1 × 106 CFU/mL) of C. perfringens, and the detection efficiency of RPA-LFB method and PCR method was compared. RPA-LFB can be completed in 20 min and the results can be read visually by the LFB test strips. The RPA-LFB has acceptable specificity and the lowest detection limit of 100 pg./μL for nucleic acid samples. It was able to stably detect C. perfringens contamination in chicken and milk at the lowest concentration of 1 × 104 CFU/mL and 1 × 103 CFU/mL, respectively. Conclusion In conclusion, RPA-LFB is specific and sensitive. It is a rapid, simple and easy-to-visualize method for the detection of C. perfringens in food and is suitable for use in field testing work.
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Affiliation(s)
- Rui Tian
- The Sanya Institute of Nanjing Agricultural University, Yabulun Industrial Park, Yazhou Bay Science and Technology City, Sanya, China
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Feng Xie
- The Sanya Institute of Nanjing Agricultural University, Yabulun Industrial Park, Yazhou Bay Science and Technology City, Sanya, China
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Yuqing Liu
- Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Guangjin Liu
- The Sanya Institute of Nanjing Agricultural University, Yabulun Industrial Park, Yazhou Bay Science and Technology City, Sanya, China
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Qingxia Li
- Hainan Animal Disease Prevention and Control Center, Haikou, China
| | - Jinxiu Wang
- Hainan Animal Disease Prevention and Control Center, Haikou, China
| | - Hongjian Zhang
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, China
| | - Lei Dai
- Hainan Animal Disease Prevention and Control Center, Haikou, China
| | - Wei Zhang
- The Sanya Institute of Nanjing Agricultural University, Yabulun Industrial Park, Yazhou Bay Science and Technology City, Sanya, China
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
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Sun ML, Yang Y, Hu R, Li JL, Liu SH, Chen YZ, Wang DY, Wang L, Li YZ, Zhong Y, Yao J, Li XN. Simple and field-adapted species identification of biological specimens combining multiplex multienzyme isothermal rapid amplification, lateral flow dipsticks, and universal primers for initial rapid screening without standard PCR laboratory. Int J Legal Med 2024; 138:561-570. [PMID: 37801116 DOI: 10.1007/s00414-023-03101-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 09/25/2023] [Indexed: 10/07/2023]
Abstract
Species identification of biological specimens can provide the valuable clues and accelerate the speed of prosecution material processing for forensic investigation, especially when the case scene is inaccessible and the physical evidence is cumbersome. Thus, establishing a rapid, simple, and field-adapted species identification method is crucial for forensic scientists, particularly as first-line technology at the crime scene for initial rapid screening. In this study, we established a new field-adapted species identification method by combining multiplex multienzyme isothermal rapid amplification (MIRA), lateral flow dipstick (LFD) system, and universal primers. Universal primers targeting COX I and COX II genes were used in multiplex MIRA-LFD system for seven species identification, and a dedicated MIRA-LFD system primer targeting CYT B gene was used to detect the human material. DNA extraction was performed by collecting DNA directly from the centrifuged supernatant. Our study found that the entire amplification process took only 15 min at 37 °C and the results of LFDs could be visually observed after 10 min. The detection sensitivity of human material could reach 10 pg, which is equivalent to the detection of single cell. Different common animal samples mixed at the ratio of 1 ng:1 ng, 10 ng:1 ng, and 1 ng:10 ng could be detected successfully. Furthermore, the damaged and degraded samples could also be detected. Therefore, the convenient, feasible, and rapid approach for species identification is suitable for popularization as first-line technology at the crime scene for initial rapid screening and provides a great convenient for forensic application.
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Affiliation(s)
- Mao-Ling Sun
- School of Forensic Medicine, China Medical University, No. 77 Puhe Road, Shenbei New District, Shenyang, 110122, People's Republic of China
- Key Laboratory of Forensic Bio-Evidence Sciences, Liaoning Province, Shenyang, People's Republic of China
- China Medical University Center of Forensic Investigation, Shenyang, People's Republic of China
| | - Ying Yang
- Department of Gastroenterology, Shengjing Hospital of China Medical University, Shenyang, People's Republic of China
| | - Ran Hu
- Department of Pathology, College of Basic Medical Sciences and First Affiliated Hospital of China Medical University, Shenyang, People's Republic of China
| | - Jia-Lun Li
- School of Forensic Medicine, China Medical University, No. 77 Puhe Road, Shenbei New District, Shenyang, 110122, People's Republic of China
- Key Laboratory of Forensic Bio-Evidence Sciences, Liaoning Province, Shenyang, People's Republic of China
- China Medical University Center of Forensic Investigation, Shenyang, People's Republic of China
| | - Shu-Han Liu
- School of Forensic Medicine, China Medical University, No. 77 Puhe Road, Shenbei New District, Shenyang, 110122, People's Republic of China
- Key Laboratory of Forensic Bio-Evidence Sciences, Liaoning Province, Shenyang, People's Republic of China
- China Medical University Center of Forensic Investigation, Shenyang, People's Republic of China
| | - Yun-Zhou Chen
- School of Forensic Medicine, China Medical University, No. 77 Puhe Road, Shenbei New District, Shenyang, 110122, People's Republic of China
- Key Laboratory of Forensic Bio-Evidence Sciences, Liaoning Province, Shenyang, People's Republic of China
- China Medical University Center of Forensic Investigation, Shenyang, People's Republic of China
| | - Dong-Yi Wang
- School of Forensic Medicine, China Medical University, No. 77 Puhe Road, Shenbei New District, Shenyang, 110122, People's Republic of China
- Key Laboratory of Forensic Bio-Evidence Sciences, Liaoning Province, Shenyang, People's Republic of China
- China Medical University Center of Forensic Investigation, Shenyang, People's Republic of China
| | - Lan Wang
- School of Forensic Medicine, China Medical University, No. 77 Puhe Road, Shenbei New District, Shenyang, 110122, People's Republic of China
- Key Laboratory of Forensic Bio-Evidence Sciences, Liaoning Province, Shenyang, People's Republic of China
- China Medical University Center of Forensic Investigation, Shenyang, People's Republic of China
| | - Yu-Zhang Li
- School of Forensic Medicine, China Medical University, No. 77 Puhe Road, Shenbei New District, Shenyang, 110122, People's Republic of China
- Key Laboratory of Forensic Bio-Evidence Sciences, Liaoning Province, Shenyang, People's Republic of China
- China Medical University Center of Forensic Investigation, Shenyang, People's Republic of China
| | - Yang Zhong
- School of Forensic Medicine, China Medical University, No. 77 Puhe Road, Shenbei New District, Shenyang, 110122, People's Republic of China
- Key Laboratory of Forensic Bio-Evidence Sciences, Liaoning Province, Shenyang, People's Republic of China
- China Medical University Center of Forensic Investigation, Shenyang, People's Republic of China
| | - Jun Yao
- School of Forensic Medicine, China Medical University, No. 77 Puhe Road, Shenbei New District, Shenyang, 110122, People's Republic of China.
- Key Laboratory of Forensic Bio-Evidence Sciences, Liaoning Province, Shenyang, People's Republic of China.
- China Medical University Center of Forensic Investigation, Shenyang, People's Republic of China.
| | - Xiao-Na Li
- School of Forensic Medicine, China Medical University, No. 77 Puhe Road, Shenbei New District, Shenyang, 110122, People's Republic of China.
- Key Laboratory of Forensic Bio-Evidence Sciences, Liaoning Province, Shenyang, People's Republic of China.
- China Medical University Center of Forensic Investigation, Shenyang, People's Republic of China.
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Park SB, Zhang Y. Development of Multienzyme Isothermal Rapid Amplification (MIRA) Combined with Lateral-Flow Dipstick (LFD) Assay to Detect Species-Specific tlh and Pathogenic trh and tdh Genes of Vibrio parahaemolyticus. Pathogens 2024; 13:57. [PMID: 38251364 PMCID: PMC10819497 DOI: 10.3390/pathogens13010057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 12/27/2023] [Accepted: 01/04/2024] [Indexed: 01/23/2024] Open
Abstract
Vibrio parahaemolyticus causes severe gastroenteritis in humans after consuming contaminated raw or undercooked seafood. A species-specific marker, the thermolabile hemolysin (tlh) gene, and two pathogenic markers, thermostable-related hemolysin (trh) and thermostable-direct hemolysin (tdh) genes, have been used to identify V. parahaemolyticus and determine its pathogenicity using both PCR and qPCR assays. To enable testing in field conditions with limited resources, this study aimed to develop a simple and rapid method to detect the species-specific (tlh) and pathogenic (trh and tdh) genes of V. parahaemolyticus using multienzyme isothermal rapid amplification (MIRA) combined with a lateral-flow dipstick (LFD). The amplification of the tlh, trh, and tdh genes could be completed within 20 min at temperatures ranging from 30 to 45 °C (p < 0.05). The test yielded positive results for V. parahaemolyticus but produced negative results for nine Vibrio species and eighteen foodborne pathogenic bacterial species. MIRA-LFD could detect 10 fg of DNA and 2 colony-forming units (CFU) of V. parahaemolyticus per reaction, demonstrating a sensitivity level comparable to that of qPCR, which can detect 10 fg of DNA and 2 CFU per reaction. Both MIRA-LFD and qPCR detected seven tlh-positive results from thirty-six oyster samples, whereas one positive result was obtained using the PCR assay. No positive results for the trh and tdh genes were obtained from any oyster samples using MIRA-LFD, PCR, and qPCR. This study suggests that MIRA-LFD is a simple and rapid method to detect species-specific and pathogenic genes of V. parahaemolyticus with high sensitivity.
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Affiliation(s)
- Seong Bin Park
- Experimental Seafood Processing Laboratory, Coastal Research & Extension Center, Mississippi State University, Pascagoula, MS 39567, USA
| | - Yan Zhang
- Experimental Seafood Processing Laboratory, Coastal Research & Extension Center, Mississippi State University, Pascagoula, MS 39567, USA
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Heng P, Shi B, Li D, Ou H, He Y, Zhou L. Rapid visualization molecular fluorescence detection of methicillin-resistant Staphylococcus aureus using the multiplex MIRA-qPCR method. Biotechnol J 2023; 18:e2300200. [PMID: 37626194 DOI: 10.1002/biot.202300200] [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: 05/05/2023] [Revised: 08/15/2023] [Accepted: 08/18/2023] [Indexed: 08/27/2023]
Abstract
Multidrug-resistant (MDR) bacterial infections constitute a major public health problem worldwide. A rapid method for the detection of methicillin-resistant Staphylococcus aureus (MRSA) is critical for the timely prevention of bacterial infections and the accurate clinical use of drugs. The nuc and mecA genes are potentially indicative of MRSA infection and in this study, a multiplex molecular fluorescence multi-enzyme isothermal rapid amplification visual assay was proposed and established. The method is capable of detecting MRSA at 17 min, 40°C amplification, and is well differentiated from common clinical bacteria in specific assays, with 500 colony-forming units (CFU) mL-1 of MRSA detected under optimal conditions. This method has excellent diagnostic capabilities versus classical methods to detect clinical samples and shows potential in the identification of pathogenic microorganisms in a clinical setting.
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Affiliation(s)
- Pengfei Heng
- State Key Laboratory of Southwestern Chinese Medicine Resources, College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Bo Shi
- The Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, Sichuan, China
| | - Dongmei Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Hua Ou
- Department of Laboratory Medicine, People's Hospital of Xinjin District, Chengdu, Sichuan, China
| | - Yang He
- State Key Laboratory of Southwestern Chinese Medicine Resources, College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Lili Zhou
- School of Laboratory Medicine, Chengdu Medical College, Chengdu, Sichuan, China
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Guo Y, Zhang L, Yang Y, Li J, Luan X, Gong S, Ma Y, Gu W, Du J, Meng Q. Development and application of the MIRA and MIRA-LFD detection methods of Spiroplasma eriocheiris. J Invertebr Pathol 2023; 201:108017. [PMID: 37926345 DOI: 10.1016/j.jip.2023.108017] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 10/30/2023] [Accepted: 11/02/2023] [Indexed: 11/07/2023]
Abstract
The tremor disease (TD) caused by Spiroplasma eriocheiris is the most destructive disease of the Chinese mitten crab, Eriocheir sinensis. This study attempts to construct Multienzyme Isothermal Rapid Amplification (MIRA), a quick and simple nucleic acid amplification method that operates at room temperature. Based on the gene sequences of S. eriocheiris, appropriate amplification primers were constructed and screened in this investigation. Both the relevant specific probe and the chosen specific amplification primers were designed and labeled. The MIRA and MIRA-LFD reaction conditions were then optimized. The result showed MIRA and MIRA-FFD could identify S. eriocheiris at 37 °C in 30 min and 15 min, respectively. To investigate the specificity of MIRA and MIRA-LFD, three Gram-negative bacteria (Bacillus subtilis, Bacillus thuringiensis, and Staphylococcus aureus), three Gram-positive bacteria (Escherichia coli, Aeromonas hydrophila, and Salmonella typhimurium) and S. eriocheiris were selected. The result showed MIRA and MIRA-LFD were highly specific to S. eriocheiris and did not react with other six pathogens. The sensitivities of PCR, MIRA, and MIRA-LFD were then evaluated. The result showed the detection limit of PCR is 1 ng/L whereas the detection limit of MIRA and MIRA-LFD is 10 pg/L. Finally, the established MIRA and MIRA-LFD detection methods had the advantages of being quick, sensitive, and specific for S. eriocheiris detection, as well as not requiring any specialized equipment.
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Affiliation(s)
- Ying Guo
- Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Marine Science and Engineering, Nanjing Normal University, 2 Xuelin Road, Nanjing 210023, China
| | - Leiting Zhang
- Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Marine Science and Engineering, Nanjing Normal University, 2 Xuelin Road, Nanjing 210023, China
| | - Yue Yang
- Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Marine Science and Engineering, Nanjing Normal University, 2 Xuelin Road, Nanjing 210023, China
| | - Jiaying Li
- Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Marine Science and Engineering, Nanjing Normal University, 2 Xuelin Road, Nanjing 210023, China
| | - Xiaoqi Luan
- Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Marine Science and Engineering, Nanjing Normal University, 2 Xuelin Road, Nanjing 210023, China
| | - Sinan Gong
- Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Marine Science and Engineering, Nanjing Normal University, 2 Xuelin Road, Nanjing 210023, China
| | - Yubo Ma
- Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Marine Science and Engineering, Nanjing Normal University, 2 Xuelin Road, Nanjing 210023, China
| | - Wei Gu
- Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Marine Science and Engineering, Nanjing Normal University, 2 Xuelin Road, Nanjing 210023, China; Co-Innovation Center for Marine Bio-Industry Technology of Jiangsu Province, Lianyungang, Jiangsu 222005, China
| | - Jie Du
- Animal Husbandry and Veterinary College, Jiangsu Vocational College of Agriculture and Forestry, Jurong, Jiangsu 212400, China
| | - Qingguo Meng
- Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Marine Science and Engineering, Nanjing Normal University, 2 Xuelin Road, Nanjing 210023, China; Co-Innovation Center for Marine Bio-Industry Technology of Jiangsu Province, Lianyungang, Jiangsu 222005, China.
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Reynolds J, Loeffler RS, Leigh PJ, Lopez HA, Yoon JY. Recent Uses of Paper Microfluidics in Isothermal Nucleic Acid Amplification Tests. BIOSENSORS 2023; 13:885. [PMID: 37754119 PMCID: PMC10526735 DOI: 10.3390/bios13090885] [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: 08/15/2023] [Revised: 09/08/2023] [Accepted: 09/11/2023] [Indexed: 09/28/2023]
Abstract
Isothermal nucleic acid amplification tests have recently gained popularity over polymerase chain reaction (PCR), as they only require a constant temperature and significantly simplify nucleic acid amplification. Recently, numerous attempts have been made to incorporate paper microfluidics into these isothermal amplification tests. Paper microfluidics (including lateral flow strips) have been used to extract nucleic acids, amplify the target gene, and detect amplified products, all toward automating the process. We investigated the literature from 2020 to the present, i.e., since the onset of the COVID-19 pandemic, during which a significant surge in isothermal amplification tests has been observed. Paper microfluidic detection has been used extensively for recombinase polymerase amplification (RPA) and its related methods, along with loop-mediated isothermal amplification (LAMP) and rolling circle amplification (RCA). Detection was conducted primarily with colorimetric and fluorometric methods, although a few publications demonstrated flow distance- and surface-enhanced Raman spectroscopic (SERS)-based detection. A good number of publications could be found that demonstrated both amplification and detection on paper microfluidic platforms. A small number of publications could be found that showed extraction or all three procedures (i.e., fully integrated systems) on paper microfluidic platforms, necessitating the need for future work.
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Affiliation(s)
- Jocelyn Reynolds
- Department of Biomedical Engineering, The University of Arizona, Tucson, AZ 85721, USA; (J.R.); (R.S.L.); (P.J.L.)
| | - Reid S. Loeffler
- Department of Biomedical Engineering, The University of Arizona, Tucson, AZ 85721, USA; (J.R.); (R.S.L.); (P.J.L.)
| | - Preston J. Leigh
- Department of Biomedical Engineering, The University of Arizona, Tucson, AZ 85721, USA; (J.R.); (R.S.L.); (P.J.L.)
| | - Hannah A. Lopez
- Department of Neuroscience, The University of Arizona, Tucson, AZ 85721, USA;
| | - Jeong-Yeol Yoon
- Department of Biomedical Engineering, The University of Arizona, Tucson, AZ 85721, USA; (J.R.); (R.S.L.); (P.J.L.)
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Wang Y, Niu J, Sun M, Li Z, Wang X, He Y, Qi J. Rapid and Sensitive Detection of Streptococcus iniae in Trachinotus ovatus Based on Multienzyme Isothermal Rapid Amplification. Int J Mol Sci 2023; 24:ijms24097733. [PMID: 37175440 PMCID: PMC10178759 DOI: 10.3390/ijms24097733] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 04/12/2023] [Accepted: 04/13/2023] [Indexed: 05/15/2023] Open
Abstract
Infectious diseases caused by Streptococcus iniae lead to massive death of fish, compose a serious threat to the global aquaculture industry, and constitute a risk to humans who deal with raw fish. In order to realize the early diagnosis of S. iniae, and control the outbreak and spread of disease, it is of great significance to establish fast, sensitive, and convenient detection methods for S. iniae. In the present study, two methods of real-time MIRA (multienzyme isothermal rapid amplification, MIRA) and MIRA-LFD (combining MIRA with lateral flow dipsticks (LFD)) for the simA gene of S. iniae were established, which could complete amplification at a constant temperature of 42 °C within 20 min. Real-time MIRA and MIRA-LFD assays showed high sensitivity (97 fg/μL or 7.6 × 102 CFU/mL), which were consistent with the sensitivity of real-time PCR and 10 times higher than that of PCR with strong specificity, repeatability simplicity, and rapidity for S. iniae originating from Trachinotus ovatus. In summary, real-time MIRA and MIRA-LFD provide effective ways for early diagnosis of S. iniae in aquaculture, especially for units in poor conditions.
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Affiliation(s)
- Yifen Wang
- Key Laboratory of Tropical Aquatic Germplasm of Hainan Province, Sanya Oceanographic Institute, Ocean University of China, Sanya 572025, China
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
| | - Jingjing Niu
- Key Laboratory of Tropical Aquatic Germplasm of Hainan Province, Sanya Oceanographic Institute, Ocean University of China, Sanya 572025, China
| | - Minmin Sun
- Key Laboratory of Tropical Aquatic Germplasm of Hainan Province, Sanya Oceanographic Institute, Ocean University of China, Sanya 572025, China
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
| | - Ziyi Li
- Key Laboratory of Tropical Aquatic Germplasm of Hainan Province, Sanya Oceanographic Institute, Ocean University of China, Sanya 572025, China
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
| | - Xiangyuan Wang
- Key Laboratory of Tropical Aquatic Germplasm of Hainan Province, Sanya Oceanographic Institute, Ocean University of China, Sanya 572025, China
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
| | - Yan He
- Key Laboratory of Tropical Aquatic Germplasm of Hainan Province, Sanya Oceanographic Institute, Ocean University of China, Sanya 572025, China
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
| | - Jie Qi
- Key Laboratory of Tropical Aquatic Germplasm of Hainan Province, Sanya Oceanographic Institute, Ocean University of China, Sanya 572025, China
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
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