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Dual-Targeting Polymer Nanoparticles Efficiently Deliver DNA Vaccine and Induce Robust Prophylactic Immunity against Spring Viremia of Carp Virus Infection. Microbiol Spectr 2022; 10:e0308522. [PMID: 36073822 PMCID: PMC9603200 DOI: 10.1128/spectrum.03085-22] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Spring viremia of carp virus (SVCV) is highly contagious and lethal to most cyprinid fish, causing serious economic losses to the carp aquaculture industry. Although DNA vaccines can generate long-term humoral and cellular immune responses, which provide protective immunity against SVCV, the major drawback of DNA vaccines is their low immunogenicity in clinical tests. Here, we construct a dual-targeted polymer DNA vaccine delivery platform (MCS-PCHG) by using mannosylated chitosan to encapsulate the poly(d,l-lactide-co-glycolide)-loaded DNA vaccine containing the heavy-chain CH3 region (CH3) of common carp IgM and the antigenic domain (G131c). The developed nanovaccine delivery platform showed good biocompatibility in vivo and in vitro. With the modification of the mannose moiety and the modification of CH3, the constructed MCS-PCHG could efficiently activate the maturation of antigen-presenting cells. Moreover, we observe significantly high level of immune-related genes expression, serum antigen-specific IgM, SVCV-neutralizing antibody titers in fish vaccinated with MCS-PCHG. Next, the protective efficacy of MCS-PCHG was further evaluated by challenge test. The highest survival rate (ca. 84%) was observed in fish vaccinated with MCS-PCHG after challenging with SVCV. This study presents a novel design for smart, dual-targeted polymer nanoparticles, which are inherently biocompatible, promising for targeted vaccine delivery. IMPORTANCE Spring viremia of carp virus (SVCV) affects global cyprinid fish farming industry, with no available commercial vaccine. Herein, we developed a dual-targeting polymer nanovaccine (MCS-PCHG) by using mannose and common carp IgM heavy chain CH3 region (CH3) as antigen presenting cell (APCs) recognition moiety, attaining the effective delivery of antigen. This dual-targeting polymer vaccine can efficiently activate the APCs, and further induce robust and durable adaptive immune response with good protection against SVCV infection. Our study provides valuable theoretical basis for developing efficient vaccine against infectious diseases in aquaculture.
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A panoptic review of techniques for finfish disease diagnosis: The status quo and future perspectives. J Microbiol Methods 2022; 196:106477. [DOI: 10.1016/j.mimet.2022.106477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 04/21/2022] [Accepted: 04/21/2022] [Indexed: 12/27/2022]
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Shi L, Li C, Gao Y, Ye J, Lu Y, Liu X. STUB1 activates antiviral response in zebrafish by promoting the expression of RIG-I. FISH & SHELLFISH IMMUNOLOGY 2022; 123:182-193. [PMID: 35227882 DOI: 10.1016/j.fsi.2022.02.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 02/21/2022] [Accepted: 02/23/2022] [Indexed: 06/14/2023]
Abstract
Spring viraemia of carp virus (SVCV) is a fierce pathogen causing high mortality in the common carp. At present, the treatment of spring viraemia of carp (SVC) is limited. Innate immunity is the host's first line of defense against microbial pathogens. Retinoic acid-inducible gene I (RIG-I) activation plays an essential role in the antiviral immune response. Virus infection can activate the RIG-I signaling and induce the production of interferon (IFN) and the expression of IFN-stimulated genes (ISGs). STUB1 (STIP1 homology and U-box containing protein 1) is a highly conserved cytoplasmic protein. This protein is known to exist widely in many biological systems and plays an important role in the process of immune regulation, but little is known in fish. To explore the immune function of STUB1 in fish, STUB1 gene was cloned from zebrafish and analyzed in this study. Zebrafish STUB1 showed 77% and 79% amino acid sequence homology with those from human and mouse, respectively. The amino acid sequence of zebrafish STUB1 contains three TPR domains and one U-box domain. Subcellular localization study revealed that STUB1 is located in the cytoplasm. And overexpression of zebrafish STUB1 resulted in the activation of the transcription of IFN1 and ISGs. Functional analysis showed that STUB1 was able to activate RIG-I signaling, and promote the expression of RIG-I, but STUB1 can degrade RIG-I in mammals. The proliferation of SVCV was significantly inhibited after the overexpression of STUB1 and N-terminal TPR domain of STUB1 in EPC cells. And through secondary structure analysis, overexpression of the mutant of STUB1 110 amino acid resulted in weakened antiviral ability. The expression of STUB1 was attenuated by poly(I:C) treatment and SVCV infection. In summary, this study demonstrated for the first time that STUB1 can induce the production of IFN, enhance the expression of ISGs by promoting the expression of RIG-I and inhibiting viral replication in fish. These findings may form the essential basis for the development of antiviral targets and drugs.
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Affiliation(s)
- Lin Shi
- College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, Hubei, China; Hubei Engineering Technology Research Center for Aquatic Animal Diseases Control and Prevention, Wuhan, 430070, Hubei, China
| | - Chen Li
- College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, Hubei, China; Hubei Engineering Technology Research Center for Aquatic Animal Diseases Control and Prevention, Wuhan, 430070, Hubei, China
| | - Yan Gao
- College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, Hubei, China; Hubei Engineering Technology Research Center for Aquatic Animal Diseases Control and Prevention, Wuhan, 430070, Hubei, China
| | - Jing Ye
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Yuanan Lu
- Department of Public Health Sciences, University of Hawaii at Manoa, Honolulu, HI, 96822, USA
| | - Xueqin Liu
- College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, Hubei, China; Hubei Engineering Technology Research Center for Aquatic Animal Diseases Control and Prevention, Wuhan, 430070, Hubei, China.
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Cong F, Zeng F, Wu M, Wang J, Huang B, Wang Y, Wang Q, Zhang S, Ma L, Guo P, Zeng W. Development of a real-time reverse transcription recombinase polymerase amplification assay for rapid detection of spring viremia of carp virus. Mol Cell Probes 2019; 50:101494. [PMID: 31863825 DOI: 10.1016/j.mcp.2019.101494] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 12/09/2019] [Accepted: 12/10/2019] [Indexed: 11/26/2022]
Abstract
Spring viremia of carp virus (SVCV) is a significant pathogenic agent that can cause large-scale outbreaks of spring viremia of carp (SVC) in many types of fish and bring huge economic losses to the aquaculture industry. A simple and convenient detection method is imperative for SVCV diagnosis. In this study, the real-time reverse transcription recombinase polymerase amplification (RT-RPA) assay was developed and validated. Primers and probe targeting the conserved region of M gene were designed and applied to the real-time RT-RPA assay that performed at 39 °C for 20 min. The specificity analysis showed that no cross-reaction with other pathogenic viruses of fish was found, indicating appropriate specificity of the assay. In vitro transcribed RNA standards were used to estimate the sensitivity of the assay and the detection limit was 102copies/reaction. To further evaluate the assay, 65 clinical samples were tested using both real-time RT-RPA assay and real-time RT-PCR method. The same detection results were observed, suggesting the potential application of real-time RT-RPA assay in clinical sample detection. This is the first report on RPA assay for SVCV detection and this new developed assay would be useful in both laboratory and in the field for diagnosis of SVCV.
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Affiliation(s)
- Feng Cong
- Guangdong Laboratory Animals Monitoring Institute and Guangdong Provincial Key Laboratory of Laboratory Animals, Guangzhou, 510633, China.
| | - Fanwen Zeng
- Guangdong Laboratory Animals Monitoring Institute and Guangdong Provincial Key Laboratory of Laboratory Animals, Guangzhou, 510633, China; College of Animal Science, South China Agricultural University, Guangzhou, 510640, China.
| | - Miaoli Wu
- Guangdong Laboratory Animals Monitoring Institute and Guangdong Provincial Key Laboratory of Laboratory Animals, Guangzhou, 510633, China.
| | - Jingjing Wang
- Jiangsu Center for Control and Prevention of Aquatic Animal Infectious Diseases, Nanjing, 210000, China.
| | - Bihong Huang
- Guangdong Laboratory Animals Monitoring Institute and Guangdong Provincial Key Laboratory of Laboratory Animals, Guangzhou, 510633, China.
| | - Yingying Wang
- Key Laboratory of Fishery Drug Development, Ministry of Agriculture, Key Laboratory of Aquatic Animal Immune Technology, Guangdong Province, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China.
| | - Qing Wang
- Key Laboratory of Fishery Drug Development, Ministry of Agriculture, Key Laboratory of Aquatic Animal Immune Technology, Guangdong Province, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China.
| | - Shouquan Zhang
- College of Animal Science, South China Agricultural University, Guangzhou, 510640, China.
| | - Lei Ma
- Guangdong Laboratory Animals Monitoring Institute and Guangdong Provincial Key Laboratory of Laboratory Animals, Guangzhou, 510633, China.
| | - Pengju Guo
- Guangdong Laboratory Animals Monitoring Institute and Guangdong Provincial Key Laboratory of Laboratory Animals, Guangzhou, 510633, China.
| | - Weiwei Zeng
- Key Laboratory of Fishery Drug Development, Ministry of Agriculture, Key Laboratory of Aquatic Animal Immune Technology, Guangdong Province, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China.
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Su H, Su J. Cyprinid viral diseases and vaccine development. FISH & SHELLFISH IMMUNOLOGY 2018; 83:84-95. [PMID: 30195914 PMCID: PMC7118463 DOI: 10.1016/j.fsi.2018.09.003] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Revised: 08/31/2018] [Accepted: 09/05/2018] [Indexed: 05/15/2023]
Abstract
In the past decades, global freshwater fish production has been rapidly growing, while cyprinid takes the largest portion. Along with the rapid rise of novel forms of intensive aquaculture, increased global aquatic animal movement and various anthropogenic stress to aquatic ecosystems during the past century, freshwater fish farming industry encounter the emergence and breakout of many diseases, especially viral diseases. Because of the ability to safely and effectively prevent aquaculture diseases, vaccines have become the mainstream technology for prevention and control of aquatic diseases in the world. In this review, authors summarized six major cyprinid viral diseases, including koi herpesvirus disease (KHVD), spring viraemia of carp (SVC), grass carp hemorrhagic disease (GCHD), koi sleepy disease (KSD), carp pox disease (CPD) and herpesviral haematopoietic necrosis (HPHN). The present review described the characteristics of these diseases from epidemiology, pathology, etiology and diagnostics. Furthermore, the development of specific vaccines respective to these diseases is stated according to preparation methods and immunization approaches. It is hoped that the review could contribute to aquaculture in prevention and controlling of cyprinid viral diseases, and serve the healthy and sustainable development of aquaculture industry.
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Affiliation(s)
- Hang Su
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jianguo Su
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, China; Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266237, China.
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Ashraf U, Lu Y, Lin L, Yuan J, Wang M, Liu X. Spring viraemia of carp virus: recent advances. J Gen Virol 2016; 97:1037-1051. [DOI: 10.1099/jgv.0.000436] [Citation(s) in RCA: 113] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Affiliation(s)
- Usama Ashraf
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei 430070, PRChina
- Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Wuhan 430070, PRChina
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei 430070, PRChina
| | - Yuanan Lu
- Department of Public Health Sciences, University of Hawaii, Manoa, HI 96822, USA
| | - Li Lin
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei 430070, PRChina
- Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Wuhan 430070, PRChina
| | - Junfa Yuan
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei 430070, PRChina
- Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Wuhan 430070, PRChina
| | - Min Wang
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei 430070, PRChina
- Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Wuhan 430070, PRChina
| | - Xueqin Liu
- Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Wuhan 430070, PRChina
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei 430070, PRChina
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Liu GX, Lin L, Wang M, Liu XQ. Development and evaluation of a loop-mediated isothermal amplification assay for the detection of channel catfish virus. JOURNAL OF FISH DISEASES 2015; 38:1073-1076. [PMID: 25594335 DOI: 10.1111/jfd.12335] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Revised: 11/05/2014] [Accepted: 11/06/2014] [Indexed: 06/04/2023]
Affiliation(s)
- G X Liu
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, China
- Hubei Collaborative Innovation Center for Freshwater Aquaculture, Wuhan, China
- Key Lab of Freshwater Animal Breeding, Ministry of Agriculture, Wuhan, China
| | - L Lin
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, China
- Hubei Collaborative Innovation Center for Freshwater Aquaculture, Wuhan, China
- Key Lab of Freshwater Animal Breeding, Ministry of Agriculture, Wuhan, China
| | - M Wang
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, China
- Hubei Collaborative Innovation Center for Freshwater Aquaculture, Wuhan, China
- Key Lab of Freshwater Animal Breeding, Ministry of Agriculture, Wuhan, China
| | - X Q Liu
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, China
- Hubei Collaborative Innovation Center for Freshwater Aquaculture, Wuhan, China
- Key Lab of Freshwater Animal Breeding, Ministry of Agriculture, Wuhan, China
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Comparison of reverse-transcription loop-mediated isothermal amplification and reverse-transcription polymerase chain reaction for grass carp reovirus. ACTA VET BRNO 2015. [DOI: 10.2754/avb201584030215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Grass carp reovirus (GCRV) has been assigned to a newly established Aquareovirus genus in the family of Reoviridae which leads to haemorrhagic disease and extremely high mortality rate in grass carp. In this study, comparison was made between the novel one-step reverse transcription loop-mediated isothermal amplification (RT-LAMP) and the reverse transcription polymerase chain reaction (RT-PCR) for detection of grass carp reovirus. The result indicated that RT-LAMP had × 10 higher sensitivity comparable to RT-PCR. The specificity of the two methods for GCRV detection were both developed successfully by other three aquatic viruses. In the field trial, both RT-PCR and RT-LAMP methods were applied to detect the samples from different infected organs and tissues. The result demonstrated that RT-LAMP had a high accuracy to confirm the diagnosis as well as the RT-PCR. This study showed that the RT-LAMP, compared to the RT-PCR, was simple, time-saving, convenient, but required specificity primers and possibly generated false positive product. Its products, unlike RT-PCR, could not be direcly used in further molecular research after purification. Thus RT-LAMP might be an optimal diagnostic method for rapid and preliminary diagnosis of GCRV infection in resource-limited setting situation.
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Chen HJ, Lee MS, Lai JY, Lai GH. Development of a loop-mediated isothermal amplification method for the rapid detection of the dioxin-degrading bacterium Ochrobactrum anthropi in soil. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2015; 160:263-70. [PMID: 26144562 DOI: 10.1016/j.jenvman.2015.06.027] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Revised: 06/09/2015] [Accepted: 06/15/2015] [Indexed: 05/22/2023]
Abstract
In this study, loop-mediated isothermal amplification (LAMP) and real-time LAMP assays were developed to detect the dioxin-degrading bacterium Ochrobactrum anthropi strain BD-1 in soil. Four primers were designed to use ITS gene amplification for the strain O. anthropi BD-1. The real-time LAMP assay was found to accomplish the reaction by 1 pg of genomic DNA load when used for nucleic acid amplification. This assay was then applied to detect O. anthropi BD-1 in eight soil samples collected from a dioxin-contaminated site. The results demonstrated that these newly developed LAMP and real-time LAMP assays will not only be useful and efficient tools for detecting the target gene, but also be used as molecular tools for monitoring the growth of dioxin-degrading O. anthropi in the soil. This is the first report to demonstrate the use of LAMP assays to monitor the presence of O. anthropi in dioxin-contaminated soil. The application of this method should improve the biomonitoring of dioxin contamination.
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Affiliation(s)
- Hsi-Jien Chen
- Department of Safety, Health, and Environmental Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan.
| | - Meng-Shiou Lee
- Graduate Institute of Pharmaceutical Chemistry, College of Pharmacy, China Medical University, Taichung 40402, Taiwan
| | - Jun-Yu Lai
- Department of Safety, Health, and Environmental Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
| | - Guan-Hua Lai
- Graduate Institute of Biotechnology, College of Agriculture and Natural Resources, National Chung Hsing University, Taichung 40402, Taiwan
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10
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Xiao Z, Shen J, Feng H, Liu H, Wang Y, Huang R, Guo Q. Characterization of two thymosins as immune-related genes in common carp (Cyprinus carpio L.). DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2015; 50:29-37. [PMID: 25596145 DOI: 10.1016/j.dci.2015.01.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Revised: 01/02/2015] [Accepted: 01/08/2015] [Indexed: 06/04/2023]
Abstract
Prothymosin alpha (ProTα) and thymosin beta (Tβ) belong to thymosin family, which consists of a series of highly conserved peptides involved in stimulating immune responses. ProTα b and Tβ are still poorly studied in teleost. Here, the full-length cDNAs of ProTα b and Tβ-like (Tβ-l) were cloned and identified in common carp (Cyprinus carpio L.). The expressions of carp ProTα b and Tβ-l exhibited rise-fall pattern and then trended to be stable during early development. After spring viraemia of carp virus (SVCV) infection, the carp ProTα b and Tβ-l transcripts were significantly up-regulated in some immune-related organs. When transiently over-expressed carp ProTα b and Tβ-l in zebrafish, these two proteins up-regulated the expressions of T lymphocytes-related genes (Rag 1, TCR-γ, CD4 and CD8α). These results suggest that carp ProTα b and Tβ may ultimately enhance the immune response during viral infection and modulate the development of T lymphocytes in teleost.
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Affiliation(s)
- Zhangang Xiao
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, NT, Hong Kong.
| | - Jing Shen
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, NT, Hong Kong
| | - Hong Feng
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Hong Liu
- Key Laboratory of Aquatic Animal Diseases, Shenzhen Exit & Entry Inspection and Quarantine Bureau, Shenzhen 518001, China
| | - Yaping Wang
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Rong Huang
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
| | - Qionglin Guo
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
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Lai GH, Chao J, Lin MK, Chang WT, Peng WH, Sun FC, Lee MS, Lee MS. Rapid and sensitive identification of the herbal tea ingredient Taraxacum formosanum using loop-mediated isothermal amplification. Int J Mol Sci 2015; 16:1562-75. [PMID: 25584616 PMCID: PMC4307320 DOI: 10.3390/ijms16011562] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Accepted: 12/31/2014] [Indexed: 11/16/2022] Open
Abstract
Taraxacum formosanum (TF) is a medicinal plant used as an important component of health drinks in Taiwan. In this study, a rapid, sensitive and specific loop-mediated isothermal amplification (LAMP) assay for authenticating TF was established. A set of four specific LAMP primers was designed based on the nucleotide sequence of the internal transcribed spacer 2 (ITS2) nuclear ribosomal DNA (nrDNA) of TF. LAMP amplicons were successfully amplified and detected when purified genomic DNA of TF was added in the LAMP reaction under isothermal condition (65 °C) within 45 min. These specific LAMP primers have high specificity and can accurately discriminate Taraxacum formosanum from other adulterant plants; 1 pg of genomic DNA was determined to be the detection limit of the LAMP assay. In conclusion, using this novel approach, TF and its misused plant samples obtained from herbal tea markets were easily identified and discriminated by LAMP assay for quality control.
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Affiliation(s)
- Guan-Hua Lai
- Graduate Institute of Biotechnology, National Chung Hsing University, Taichung 40402, Taiwan.
| | - Jung Chao
- Department & Institute of Pharmacology, National Yang-Ming University, Taipei 11221, Taiwan.
| | - Ming-Kuem Lin
- Department of Chinese Pharmaceutical Science and Chinese Medicine Resources, China Medical University, Taichung 40402, Taiwan.
| | - Wen-Te Chang
- Department of Chinese Pharmaceutical Science and Chinese Medicine Resources, China Medical University, Taichung 40402, Taiwan.
| | - Wen-Huang Peng
- Department of Chinese Pharmaceutical Science and Chinese Medicine Resources, China Medical University, Taichung 40402, Taiwan.
| | - Fang-Chun Sun
- Department of Bioresources, Da-Yeh University, Changhua 51591, Taiwan.
| | - Meng-Shiunn Lee
- Management Center, Department of Medical Research and Development, Show Chwan Health Care Sysytem, Changhua 51951, Taiwan.
| | - Meng-Shiou Lee
- Department of Chinese Pharmaceutical Science and Chinese Medicine Resources, China Medical University, Taichung 40402, Taiwan.
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Loop-mediated isothermal amplification (LAMP) assays for detection and identification of aquaculture pathogens: current state and perspectives. Appl Microbiol Biotechnol 2014; 98:2881-95. [DOI: 10.1007/s00253-014-5531-z] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Revised: 01/08/2014] [Accepted: 01/09/2014] [Indexed: 11/26/2022]
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Selection and characterization of single-chain recombinant antibodies against spring viraemia of carp virus from mouse phage display library. J Virol Methods 2013; 194:178-84. [PMID: 23994147 DOI: 10.1016/j.jviromet.2013.08.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 08/09/2013] [Accepted: 08/15/2013] [Indexed: 10/26/2022]
Abstract
Antibody-displaying phage library was selected after three rounds of panning against spring viraemia of carp virus (SVCV) by phage display technology. Eight positive clones which could produce soluble single-chain fragment variable (scFv) antibody induced by isopropyl-beta-d-thiogalactopyranoside (IPTG) were obtained. Dot blot results showed that the eight scFv antibodies could recognize SVCV. The soluble scFv antibodies showed a molecular weight 29 kD by Western blot. All scFv antibodies could recognize SVCV proteins specifically without cross-reaction with other virus proteins by ELISA. Indirect immunofluorescence results showed that all of these scFv antibodies reacted positively with virus in the SVCV-infected cells. These scFv antibodies will be useful tools to establish immunological detection methods for SVCV.
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Mao Z, Qiu Y, Zheng L, Chen J, Yang J. Development of a visual loop-mediated isothermal amplification method for rapid detection of the bacterial pathogen Pseudomonas putida of the large yellow croaker (Pseudosciaena crocea). J Microbiol Methods 2012; 89:179-84. [PMID: 22475582 DOI: 10.1016/j.mimet.2012.03.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2012] [Revised: 03/15/2012] [Accepted: 03/16/2012] [Indexed: 11/26/2022]
Abstract
In recent years, the large yellow croaker (Pseudosciaena crocea), an important marine fish farmed in the coastal areas of Zhejiang province, east China, has become severely endangered as a result of the bacterial pathogen Pseudomonas putida. This paper reports the development of a visual loop-mediated isothermal amplification (LAMP) assay for rapid detection of the pathogen. Four primers, F3, B3, FIP and BIP, were designed on the basis of DNA sequence of the rpoN gene of P. putida. After optimization of the reaction conditions, the detection limit of LAMP assay was 4.8cfu per reaction, 10-fold higher than that of conventional PCR. The assay showed high specificity to discriminate all P. putida isolates from nine other Gram-negative bacteria. The assay also successfully detected the pathogen DNA in the tissues of infected fish. For visual LAMP without cross-contamination, SYBR Green I was embedded in a microcrystalline wax capsule and preset in the reaction tubes; after the reaction the wax was melted at 85°C to release the dye and allow intercalation with the amplicons. The simple, highly sensitive, highly specific and cost-effective characteristics of visual LAMP may encourage its application in the rapid diagnosis of this pathogen.
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Affiliation(s)
- Zhijuan Mao
- Biological and Environmental College, Zhejiang Wanli University, Ningbo 315100, China.
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Li S, Sun F, Zhang YB, Gui JF, Zhang QY. Identification of DreI as an antiviral factor regulated by RLR signaling pathway. PLoS One 2012; 7:e32427. [PMID: 22412872 PMCID: PMC3296712 DOI: 10.1371/journal.pone.0032427] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2011] [Accepted: 01/26/2012] [Indexed: 12/21/2022] Open
Abstract
Background Retinoic acid-inducible gene I (RIG-I)–like receptors (RLRs) had been demonstrated to prime interferon (IFN) response against viral infection via the conserved RLR signaling in fish, and a novel fish-specific gene, the grass carp reovirus (GCRV)-induced gene 2 (Gig2), had been suggested to play important role in host antiviral response. Methodology/Principal Findings In this study, we cloned and characterized zebrafish Gig2 homolog (named Danio rerio Gig2-I, DreI), and revealed its antiviral role and expressional regulation signaling pathway. RT-PCR, Western blot and promoter activity assay indicate that DreI can be induced by poly I:C, spring viremia of carp virus (SVCV) and recombinant IFN (rIFN), showing that DreI is a typical ISG. Using the pivotal signaling molecules of RLR pathway, including RIG-I, MDA5 and IRF3 from crucian carp, it is found that DreI expression is regulated by RLR cascade and IRF3 plays an important role in this regulation. Furthermore, promoter mutation assay confirms that the IFN-stimulated regulatory elements (ISRE) in the 5′ flanking region of DreI is essential for its induction. Finally, overexpression of DreI leads to establish a strong antiviral state against SVCV and Rana grylio virus (RGV) infection in EPC (Epithelioma papulosum cyprinid) cells. Conclusions/Significance These data indicate that DreI is an antiviral protein, which is regulated by RLR signaling pathway.
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Affiliation(s)
| | | | | | | | - Qi-Ya Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Wuhan Center for Developmental Biology, Institute of Hydrobiology, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Wuhan, China
- * E-mail:
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Chen J, Xiong J, Cui B, Yang J, Mao Z, Li W, Chen X, Zheng X. Rapid and sensitive detection of mud crab Scylla serrata reovirus by a reverse transcription loop-mediated isothermal amplification assay. J Virol Methods 2011; 178:153-60. [DOI: 10.1016/j.jviromet.2011.09.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2011] [Revised: 09/01/2011] [Accepted: 09/12/2011] [Indexed: 11/16/2022]
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17
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Ren W, Renault T, Cai Y, Wang C. Development of a loop-mediated isothermal amplification assay for rapid and sensitive detection of ostreid herpesvirus 1 DNA. J Virol Methods 2010; 170:30-6. [PMID: 20813133 DOI: 10.1016/j.jviromet.2010.08.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2010] [Revised: 08/17/2010] [Accepted: 08/23/2010] [Indexed: 10/19/2022]
Abstract
A loop-mediated isothermal amplification (LAMP) assay was developed for rapid, specific and sensitive detection of ostreid herpesvirus 1 (OsHV-1) DNA. A set of four primers was designed, based on the sequence of the ATPase subunit of the OsHV-1 DNA-packaging terminase gene. The reaction temperature and time were optimized to 64°C and 60min, respectively. LAMP products were detected by agarose gel electrophoresis or by visual inspection of a color change due to addition of fluorescent dye. The developed method was highly specific for detection of OsHV-1, and no cross-reaction was observed with other DNA viruses, such as White spot syndrome virus (WSSV), Penaeus stylirostris densovirus (PstDNV), Turbot reddish body iridovirus (TRBIV) and Lymphocystis disease virus (LCDV) found commonly in China. The lower detection limit of the LAMP assay was approximately 20 copies per reaction, and it was 100 times more sensitive than that of conventional PCR. A comparative evaluation of 10 oyster samples using LAMP and PCR assays showed overall correlation in positive and negative results for OsHV-1. These results indicate that the LAMP assay is a simple, rapid, sensitive, specific and reliable technique for the detection of OsHV-1. The LAMP technique has capacity for use for the detection of OsHV-1 both in the laboratory and on farms.
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Affiliation(s)
- Weicheng Ren
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Science, 106 Nanjing Road, Qingdao, Shandong, China
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18
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Detection of Francisella piscicida in Atlantic cod (Gadus morhua L) by the loop-mediated isothermal amplification (LAMP) reaction. Vet J 2010; 184:357-61. [DOI: 10.1016/j.tvjl.2009.03.027] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2008] [Revised: 03/15/2009] [Accepted: 03/19/2009] [Indexed: 11/20/2022]
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Cai SH, Lu YS, Wu ZH, Jian JC, Wang B, Huang YC. Loop-mediated isothermal amplification method for rapid detection of Vibrio alginolyticus, the causative agent of vibriosis in mariculture fish. Lett Appl Microbiol 2010; 50:480-5. [PMID: 20214730 DOI: 10.1111/j.1472-765x.2010.02823.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIMS The purpose of this study was to develop a loop-mediated isothermal amplification (LAMP) method for the rapid, sensitive and simple detection of Vibrio alginolyticus in mariculture fish. METHODS AND RESULTS LAMP primers were designed by targeting the gyrB gene. With Bst DNA polymerase, the target DNA can be clearly amplified for 60 min at 64 degrees C in a simple water bath. The detection sensitivity of the LAMP assay for the detection of V. alginolyticus is about 3.7 x 10(2) CFU ml(-1) (3.7 CFU per reaction). LAMP products could be judged with agar gel or naked eye after the addition of SYBR Green I. There were no cross-reactions with other bacterial strains indicating a high specificity of the LAMP. The LAMP method was applied to detect V. alginolyticus-infected fish tissues effectively. CONCLUSIONS The LAMP established in this study is a simple, sensitive, specific, inexpensive and rapid protocol for the detection of V. alginolyticus. SIGNIFICANCE AND IMPACT OF THE STUDY This LAMP method provides an important diagnostic tool for the detection of V. alginolyticus infection both in the laboratory and field.
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Affiliation(s)
- S H Cai
- Fisheries College, Guangdong Ocean University, Zhanjiang, China
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20
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Shivakoti S, Ito H, Murase T, Ono E, Takakuwa H, Yamashiro T, Otsuki K, Ito T. Development of reverse transcription-loop-mediated isothermal amplification (RT-LAMP) assay for detection of avian influenza viruses in field specimens. J Vet Med Sci 2009; 72:519-23. [PMID: 20032626 DOI: 10.1292/jvms.09-0473] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Reverse transcription loop-mediated isothermal amplification (RT-LAMP) is an established gene amplification method for rapid diagnosis of various infectious diseases. In order to detect avian influenza viruses, particularly in field specimens, specific primers targeting the matrix gene were designed. Thirty-four virus samples, including isolates from wild and domestic avian hosts belonging to various geographical areas, were used to confirm the validity of the primers. All samples were confirmed to be positive in less than 1 hr. The RT-LAMP assay was also able to detect avian influenza virus in the various field samples, such as swabs, tissues, and feces. These results indicate that the developed RT-LAMP assay with uniquely designed primers is potentially useful in comprehensive avian influenza surveillance.
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Affiliation(s)
- Sakar Shivakoti
- Laboratory of Veterinary Public Health, Faculty of Agriculture, Tottori University
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Development and evaluation of a loop-mediated isothermal amplification assay for rapid detection of lymphocystis disease virus. J Virol Methods 2009; 163:378-84. [PMID: 19891986 DOI: 10.1016/j.jviromet.2009.10.028] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2009] [Revised: 10/21/2009] [Accepted: 10/26/2009] [Indexed: 11/22/2022]
Abstract
A loop-mediated isothermal amplification (LAMP) assay was developed for the detection of lymphocystis disease virus (LCDV). A set of five specific primers, two inner and two outer primers and a loop primer, were designed on the basis of the major capsid protein gene of LCDV. The reaction time and temperatures were optimized for 60 min at 63 degrees C, respectively. LAMP amplification products were detected by a ladder-like appearance on agarose gel electrophoresis or a naked-eye inspection of a color change in the reaction tube by addition of SYBR Green I. The assay was specific for LCDV, and there was no cross-reactivity with white spot syndrome virus (WSSV) or six other Iridoviridae viruses (epizootic hematopoietic necrosis virus, EHNV; tiger frog virus, TFV; Bohle iridovirus, BIV; soft-shelled turtle iridovirus, STIV; infectious spleen and kidney necrosis virus, ISKNV; red sea bream iridovirus, RSIV). The detection limit of the LAMP assay was 15 fg, which was similar to that of real-time quantitative polymerase chain reaction (PCR) and 10-fold higher than the conventional PCR. The LAMP assay was evaluated using 109 clinical samples, and the results indicated the suitability and simplicity of the test as a rapid, field diagnostic tool for detection of LCDV. The LCDV LAMP assay has potential for early diagnosis of LCDV infection.
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Gu H, Qi X, Li X, Jiang H, Wang Y, Liu F, Lu S, Yang Y, Liu F. Rapid and specific detection of H3 swine influenza virus using reverse transcription loop-mediated isothermal amplification method. J Appl Microbiol 2009; 108:1145-54. [PMID: 19732212 DOI: 10.1111/j.1365-2672.2009.04520.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
AIM The main objective of our study is to develop a reverse transcriptase loop-mediated isothermal amplification (RT-LAMP)-based system for rapid and specific detection of H3 swine influenza virus (SIV). METHODS AND RESULTS The system, H3 RT-LAMP, contained a set of six novel primers that targeted eight distinct regions of the viral haemagglutinin (HA) gene that are highly conserved among H3 influenza A viruses but not between H3 and other subtypes. H3 RT-LAMP accurately and specifically detected H3 SIV of different isolates from culture and from swine lung samples. The system is at least 10-fold more sensitive than the conventional RT-PCR assay and even comparable to the real-time RT-PCR method, with the detection limit of about one plaque-forming unit per reaction. Of 27 swine lung samples tested, 11 samples were positive in reactions with the RT-LAMP and real-time RT-PCR methods, while only 7 were positive with the conventional RT-PCR assay. Importantly, the assay can be completed within 45 min and is faster than the conventional RT-PCR and real-time RT-PCR approaches. CONCLUSIONS Our results provide the first direct evidence that RT-LAMP is highly specific and sensitive for detecting H3 SIV. SIGNIFICANCE AND IMPACT OF THE STUDY These results suggest that LAMP offers a promising alternative tool for rapid, inexpensive and specific diagnosis of influenza virus infection of swine and other animals in frontline settings.
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Affiliation(s)
- H Gu
- Institute of Virology, State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, Jiangsu, China
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Huang CH, Lai GH, Lee MS, Lin WH, Lien YY, Hsueh SC, Kao JY, Chang WT, Lu TC, Lin WN, Chen HJ, Lee MS. Development and evaluation of a loop-mediated isothermal amplification assay for rapid detection of chicken anaemia virus. J Appl Microbiol 2009; 108:917-924. [PMID: 19737344 DOI: 10.1111/j.1365-2672.2009.04481.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIM Chicken anaemia virus (CAV) causes an economically important viral disease in chickens worldwide. The main aim of this study was to establish a rapid, sensitive and specific loop-mediated isothermal amplification (LAMP) assay for detecting CAV infection. METHODS AND RESULTS A set of four specific LAMP primers were designed based on the nucleotide sequence of the CAV VP2 gene, which encodes a nonstructural protein. These were used for the amplification of a specific target region of the VP2 gene. LAMP amplicons were successfully amplified and detected by DNA electrophoresis and by direct naked eye SYBR Green I visualization. A sensitivity test systematically demonstrated that the LAMP assay was superior to a conventional PCR assay with a minimum concentration limit of 100 fg compared to 10 ng for the conventional PCR. The specificity of the LAMP assay for CAV detection is consistent with conventional PCR. Using this established LAMP assay, infected and uninfected clinical samples obtained from an experimental farm were fully verified. CONCLUSIONS A novel nucleic acid-based approach of LAMP assay was successfully developed for detecting CAV infection. SIGNIFICANCE AND IMPACT OF THE STUDY In this study, these results indicate that the developed LAMP assay herein for CAV detection is a time-effective, simple, sensitive and specific test that can be used as an alternative approach in the future for large-scaled diagnosis on the farm of CAV infection.
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Affiliation(s)
- C-H Huang
- Institute of Biochemistry, College of life Science, National Chung Hsing University, Taichung, Taiwan
| | - G-H Lai
- Institute of Biochemistry, College of life Science, National Chung Hsing University, Taichung, Taiwan
| | - M-S Lee
- Department of Medical Research, Tung's Taichung MetroHarbour Hospital, Taichung, Taiwan
| | - W-H Lin
- Master Degree Program, PhD Program, School of Pharmacy Undergraduate Program, China Medical University, Taichung, Taiwan
| | - Y-Y Lien
- Department of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - S-C Hsueh
- Department of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - J-Y Kao
- Institute of Biochemistry, College of life Science, National Chung Hsing University, Taichung, Taiwan
| | - W-T Chang
- School of Chinese Medicine Resources, China Medical University, Taichung, Taiwan
| | - T-C Lu
- Institute of Biochemistry, College of life Science, National Chung Hsing University, Taichung, Taiwan
| | - W-N Lin
- College of Pharmacy, Graduate Institute of Chinese Pharmaceutical Sciences, China Medical University, Taichung, Taiwan
| | - H-J Chen
- Department of Safety, Health and Environmental Engineering, Mingchi University of Technology, Taipei, Taiwan
| | - M-S Lee
- School of Chinese Medicine Resources, China Medical University, Taichung, Taiwan
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Gahlawat SK, Ellis AE, Collet B. A sensitive loop-mediated isothermal amplification (LAMP) method for detection of Renibacterium salmoninarum, causative agent of bacterial kidney disease in salmonids. JOURNAL OF FISH DISEASES 2009; 32:491-497. [PMID: 19538642 DOI: 10.1111/j.1365-2761.2009.01005.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Loop-mediated isothermal amplification (LAMP) is a novel technique for nucleic acid amplification with high specificity, sensitivity and rapidity and does not require expensive equipment or reagents. In the present study, we developed and evaluated a LAMP method for the rapid detection of Renibacterium salmoninarum causing the bacterial kidney disease in salmonids. This method was more sensitive than quantitative real-time polymerase chain reaction (qPCR). Using DNA template extracted from cultured R. salmoninarum, the LAMP method gave an amplification signal from template diluted to 10(-8) while the limit of detection of qPCR was10(-7). The LAMP method was also highly specific and did not amplify DNA purified from five other Gram-positive and -negative bacterial fish pathogens. The method also worked well using extracts of macrophages infected with R. salmoninarum and kidney material from rainbow trout, which were positive for R. salmoninarum by qPCR and crude R. salmoninarum culture. There was some evidence for inhibitors of the LAMP reaction in the kidney samples, which was overcome by diluting the sample.
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Affiliation(s)
- S K Gahlawat
- Department of Zoology and Aquaculture, CCS Haryana Agricultural University, Haryana, India
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