Name: reverse transcription loop-mediated isothermal amplification (rt-lamp) assay for the specific and rapid detection of tilapia lake virus
Uploaded: 2020-05-18T14:00:00
Description: Watch this Scientific Journal Video about Reverse Transcription Loop-Mediated Isothermal Amplification RT-LAMP Assay for the Specific and Rapid Detection of Tilapia Lake Virus at JoVE.com

该项目由泰国研究基金（TRF）赠款号RDG6050078和泰国曼谷卡塞萨特大学高级研究所农业和食品高级研究中心资助，泰国高等教育研究促进和国立研究大学项目，高等教育委员会办公室，泰国教育部。这项研究部分由卡塞萨特大学研究生院研究生课程奖学金提供支持。作者要感谢KwanraweeeSirikanchana博士对这段视频的叙述和对皮亚瓦萨拉·西卡林编辑视频的叙述。

这项涉及使用动物组织的实验，得到了泰国曼谷卡塞萨特大学机构动物护理和使用委员会的批准（协议号为ACKU61-VET-009）。
1. 组织收集
<ol><li>使用过量的丁香油（即超过3 mL/升）对罗非鱼进行安乐死。三氯苯甲烷硫化剂可用作丁香油的替代品。</li>
	<li>使用无菌的梅奥剪刀和钳子切开死后罗非鱼的腹部，切除约30-50毫克的肝脏组织，或使用显微镜盖玻璃，通过纵向刮鱼皮层（?...

<ol>
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J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Changes+to+taxonomy+and+the+International+Code+of+Virus+Classification+and+Nomenclature+ratified+by+the+International+Committee+on+Taxonomy+of+Viruses+(2017).">Changes to taxonomy and the International Code of Virus Classification and Nomenclature ratified by the International Committee on Taxonomy of Viruses (2017).</a> Archives of Virology. 162 (8), 2505-2538 (2017).</li><li>Bacharach, E., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Characterization+of+a+Novel+Orthomyxo-like+Virus+Causing+Mass+Die-Offs+of+Tilapia.">Characterization of a Novel Orthomyxo-like Virus Causing Mass Die-Offs of Tilapia.</a> MBio. 7 (2), 00431 (2016).</li><li>Jaemwimol, P., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Susceptibility+of+important+warm+water+fish+species+to+tilapia+lake+virus+(TiLV)+infection.">Susceptibility of important warm water fish species to tilapia lake virus (TiLV) infection.</a> Aquaculture. 497, 462-468 (2018).</li><li>Giews, F. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Global+Information+and+Early+Warning+System+On+Food+And+Agriculture.">Global Information and Early Warning System On Food And Agriculture.</a> Food and Agriculture Organization of the United Nations. , (2017).</li><li>Al-Hussinee, L., Subramaniam, K., Ahasan, M. S., Keleher, B., Waltzek, T. B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Complete+Genome+Sequence+of+a+Tilapia+Lake+Virus+Isolate+Obtained+from+Nile+Tilapia+(Oreochromis+niloticus).">Complete Genome Sequence of a Tilapia Lake Virus Isolate Obtained from Nile Tilapia (Oreochromis niloticus).</a> Genome Announcements. 6 (26), (2018).</li><li>Thammatorn, W., Rawiwan, P., Surachetpong, W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Minimal+risk+of+tilapia+lake+virus+transmission+via+frozen+tilapia+fillets.">Minimal risk of tilapia lake virus transmission via frozen tilapia fillets.</a> Journal of Fish Diseases. 42 (1), 3-9 (2019).</li><li>Fathi, M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Identification+of+Tilapia+Lake+Virus+in+Egypt+in+Nile+tilapia+affected+by+'summer+mortality'+syndrome.">Identification of Tilapia Lake Virus in Egypt in Nile tilapia affected by 'summer mortality' syndrome.</a> Aquaculture. 473, 430-432 (2017).</li><li>Tattiyapong, P., Sirikanchana, K., Surachetpong, W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Development+and+validation+of+a+reverse+transcription+quantitative+polymerase+chain+reaction+for+tilapia+lake+virus+detection+in+clinical+samples+and+experimentally+challenged+fish.">Development and validation of a reverse transcription quantitative polymerase chain reaction for tilapia lake virus detection in clinical samples and experimentally challenged fish.</a> Journal of Fish Diseases. 41 (2), 255-261 (2018).</li><li>Waiyamitra, P., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+TaqMan+RT-qPCR+assay+for+tilapia+lake+virus+(TiLV)+detection+in+tilapia.">A TaqMan RT-qPCR assay for tilapia lake virus (TiLV) detection in tilapia.</a> Aquaculture. 497, 184-188 (2018).</li><li>Kembou Tsofack, J. E., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Detection+of+Tilapia+Lake+Virus+in+Clinical+Samples+by+Culturing+and+Nested+Reverse+Transcription-PCR.">Detection of Tilapia Lake Virus in Clinical Samples by Culturing and Nested Reverse Transcription-PCR.</a> Journal of Clinical Microbiology. 55 (3), 759-767 (2017).</li><li>Dong, H. T., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Emergence+of+tilapia+lake+virus+in+Thailand+and+an+alternative+semi-nested+RT-PCR+for+detection.">Emergence of tilapia lake virus in Thailand and an alternative semi-nested RT-PCR for detection.</a> Aquaculture. 476, 111-118 (2017).</li><li>Notomi, T., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Loop-mediated+isothermal+amplification+of+DNA.">Loop-mediated isothermal amplification of DNA.</a> Nucleic Acids Research. 28 (12), 63 (2000).</li><li>Mori, Y., Notomi, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Loop-mediated+isothermal+amplification+(LAMP):+a+rapid,+accurate,+and+cost-effective+diagnostic+method+for+infectious+diseases.">Loop-mediated isothermal amplification (LAMP): a rapid, accurate, and cost-effective diagnostic method for infectious diseases.</a> Journal of Infection and Chemotherapy. 15 (2), 62-69 (2009).</li><li>Mori, Y., Nagamine, K., Tomita, N., Notomi, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Detection+of+loop-mediated+isothermal+amplification+reaction+by+turbidity+derived+from+magnesium+pyrophosphate+formation.">Detection of loop-mediated isothermal amplification reaction by turbidity derived from magnesium pyrophosphate formation.</a> Biochemical and Biophysical Research Communications. 289 (1), 150-154 (2001).</li><li>Caipang, C. M., Haraguchi, I., Ohira, T., Hirono, I., Aoki, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Rapid+detection+of+a+fish+iridovirus+using+loop-mediated+isothermal+amplification+(LAMP).">Rapid detection of a fish iridovirus using loop-mediated isothermal amplification (LAMP).</a> Journal of Virological Methods. 121 (2), 155-161 (2004).</li><li>Soliman, H., El-Matbouli, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=An+inexpensive+and+rapid+diagnostic+method+of+Koi+Herpesvirus+(KHV)+infection+by+loop-mediated+isothermal+amplification.">An inexpensive and rapid diagnostic method of Koi Herpesvirus (KHV) infection by loop-mediated isothermal amplification.</a> Virology Journal. 2, 83 (2005).</li><li>Gunimaladevi, I., Kono, T., Venugopal, M. N., Sakai, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Detection+of+koi+herpesvirus+in+common+carp,+Cyprinus+carpio+L.,+by+loop-mediated+isothermal+amplification.">Detection of koi herpesvirus in common carp, Cyprinus carpio L., by loop-mediated isothermal amplification.</a> Journal of Fish Diseases. 27 (10), 583-589 (2004).</li><li>Gunimaladevi, I., Kono, T., Lapatra, S. E., Sakai, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+loop+mediated+isothermal+amplification+(LAMP)+method+for+detection+of+infectious+hematopoietic+necrosis+virus+(IHNV)+in+rainbow+trout+(Oncorhynchus+mykiss).">A loop mediated isothermal amplification (LAMP) method for detection of infectious hematopoietic necrosis virus (IHNV) in rainbow trout (Oncorhynchus mykiss).</a> Archives of Virology. 150 (5), 899-909 (2005).</li><li>Kono, T., Savan, R., Sakai, M., Itami, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Detection+of+white+spot+syndrome+virus+in+shrimp+by+loop-mediated+isothermal+amplification.">Detection of white spot syndrome virus in shrimp by loop-mediated isothermal amplification.</a> Journal of Virological Methods. 115 (1), 59-65 (2004).</li><li>Soliman, H., El-Matbouli, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Reverse+transcription+loop-mediated+isothermal+amplification+(RT-LAMP)+for+rapid+detection+of+viral+hemorrhagic+septicaemia+virus+(VHS).">Reverse transcription loop-mediated isothermal amplification (RT-LAMP) for rapid detection of viral hemorrhagic septicaemia virus (VHS).</a> Veterinary Microbiology. 114 (3-4), 205-213 (2006).</li><li>Yeh, H. Y., Shoemaker, C. A., Klesius, P. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Evaluation+of+a+loop-mediated+isothermal+amplification+method+for+rapid+detection+of+channel+catfish+Ictalurus+punctatus+important+bacterial+pathogen+Edwardsiella+ictaluri.">Evaluation of a loop-mediated isothermal amplification method for rapid detection of channel catfish Ictalurus punctatus important bacterial pathogen Edwardsiella ictaluri.</a> Journal of Microbiological Methods. 63 (1), 36-44 (2005).</li><li>Yeh, H. Y., Shoemaker, C. A., Klesius, P. 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H., Shen, Q. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Sensitive+and+rapid+detection+of+infectious+hypodermal+and+hematopoietic+necrosis+virus+(IHHNV)+in+shrimps+by+loop-mediated+isothermal+amplification.">Sensitive and rapid detection of infectious hypodermal and hematopoietic necrosis virus (IHHNV) in shrimps by loop-mediated isothermal amplification.</a> Journal of Virological Methods. 131 (1), 41-46 (2006).</li><li>Shivappa, R. B., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Detection+of+spring+viraemia+of+carp+virus+(SVCV)+by+loop-mediated+isothermal+amplification+(LAMP)+in+koi+carp,+Cyprinus+carpio+L.">Detection of spring viraemia of carp virus (SVCV) by loop-mediated isothermal amplification (LAMP) in koi carp, Cyprinus carpio L.</a> Journal of Fish Diseases. 31 (4), 249-258 (2004).</li><li>Wei, X. N., Zheng, Z. J., Zhang, L. H., Qu, F., Huang, X. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Sensitive+and+rapid+detection+of+Aeromonas+caviae+in+stool+samples+by+loop-mediated+isothermal+amplification.">Sensitive and rapid detection of Aeromonas caviae in stool samples by loop-mediated isothermal amplification.</a> Diagnostic Microbiology and Infectious Disease. 60 (1), 113-116 (2008).</li><li>Chinabut, S., Puttinaowarat, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+choice+of+disease+control+strategies+to+secure+international+market+access+for+aquaculture+products.">The choice of disease control strategies to secure international market access for aquaculture products.</a> Developmental Biology. 121, 255-261 (2005).</li><li>Soto, E., Yun, S., Surachetpong, W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Susceptibility+of+Tilapia+Lake+Virus+to+buffered+Povidone-iodine+complex+and+chlorine.">Susceptibility of Tilapia Lake Virus to buffered Povidone-iodine complex and chlorine.</a> Aquaculture. 512, 734342 (2019).</li><li>Jaemwimol, P., Sirikanchana, K., Tattiyapong, P., Mongkolsuk, S., Surachetpong, W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Virucidal+effects+of+common+disinfectants+against+tilapia+lake+virus.">Virucidal effects of common disinfectants against tilapia lake virus.</a> Journal of Fish Diseases. 42 (10), 1383-1389 (2019).</li><li>Jansen, M. D., Dong, H. T., Mohan, C. V. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Tilapia+lake+virus:+a+threat+to+the+global+tilapia+industry.">Tilapia lake virus: a threat to the global tilapia industry.</a> Reviews in Aquaculture. 11 (3), 725-739 (2019).</li><li>Yin, J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Development+of+a+simple+and+rapid+reverse+transcription-loopmediated+isothermal+amplification+(RT-LAMP)+assay+for+sensitive+detection+of+tilapia+lake+virus.">Development of a simple and rapid reverse transcription-loopmediated isothermal amplification (RT-LAMP) assay for sensitive detection of tilapia lake virus.</a> Journal of Fish Diseases. 42 (6), 817-824 (2019).</li><li>Savan, R., Kono, T., Itami, T., Sakai, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Loop-mediated+isothermal+amplification:+an+emerging+technology+for+detection+of+fish+and+shellfish+pathogens.">Loop-mediated isothermal amplification: an emerging technology for detection of fish and shellfish pathogens.</a> Journal of Fish Diseases. 28 (10), 573-581 (2005).</li><li>Phusantisampan, T., Tattiyapong, P., Mutrakulcharoen, P., Sriariyanun, M., Surachetpong, W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Rapid+detection+of+tilapia+lake+virus+using+a+one-step+reverse+transcription+loop-mediated+isothermal+amplification+assay.">Rapid detection of tilapia lake virus using a one-step reverse transcription loop-mediated isothermal amplification assay.</a> Aquaculture. 507, 35-39 (2019).</li><li>Liamnimitr, P., Thammatorn, W., U-thoomporn, S., Tattiyapong, P., Surachetpong, W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Non-lethal+sampling+for+Tilapia+Lake+Virus+detection+by+RT-qPCR+and+cell+culture.">Non-lethal sampling for Tilapia Lake Virus detection by RT-qPCR and cell culture.</a> Aquaculture. 486, 75-80 (2018).</li><li>Yin, J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Development+of+a+simple+and+rapid+reverse+transcription-loopmediated+isothermal+amplification+(RT-LAMP)+assay+for+sensitive+detection+of+tilapia+lake+virus.">Development of a simple and rapid reverse transcription-loopmediated isothermal amplification (RT-LAMP) assay for sensitive detection of tilapia lake virus.</a> Journal of Fish Diseases. 42 (6), 817-824 (2019).</li><li>Khan, R. S. A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Rapid+detection+of+infectious+bursal+disease+by+loop-mediated+isothermal+amplification+for+field+analysis.">Rapid detection of infectious bursal disease by loop-mediated isothermal amplification for field analysis.</a> Iranian Journal of Veterinary Research. 19 (2), 101-107 (2018).</li><li>Nagamine, K., Hase, T., Notomi, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Accelerated+reaction+by+loop-mediated+isothermal+amplification+using+loop+primers.">Accelerated reaction by loop-mediated isothermal amplification using loop primers.</a> Molecular and Cellular Probes. 16 (3), 223-229 (2002).</li><li>Debode, F., Marien, A., Janssen, E., Bragard, C., Berben, G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+influence+of+amplicon+length+on+real-time+PCR+results.">The influence of amplicon length on real-time PCR results.</a> Biotechnology, Agronomy, Society and Environment. 21 (1), 3-11 (2017).</li></ol>

水产养殖业不断受到病毒感染的威胁，造成直接经济损失99、23、28。23,28例如，世界上许多地区的罗非鱼生产国对罗非鱼生产国构成重大1,6,威胁。到目前为止，还没有特定的治疗药物可用于预防TiLVD。虽然疫苗的开发正在进行中，但高效疫苗在可用于商业目...

罗非鱼湖病毒病（TiLVD）是罗非鱼病毒性疾病，据说在世界许多地区，包括亚洲1、2、2非洲和美国，导致罗非鱼死亡。1该病于2009年在以色列罗非鱼大规模死亡期间首次得到确认，金内雷特湖的野生罗非鱼数量从每年257吨急剧下降到8吨。这种疾病是由罗非鱼湖病毒（TiLV）引起的，该病毒已被分配给安农韦里达家族作为一种新的属罗拉平病毒和新物种罗非鱼罗拉平病毒3。TiLV的基因特征表明，该病毒是一种新型的包络、负感、单链RNA病毒，具有10个片段编码10个蛋白质1,1、2、4。,4各种品种的罗非鱼属萨罗罗罗登，奥利奥米米，和提拉平和其他温水鱼（如，巨型葫三（奥斯罗莫斯戈拉米）已被证明易受TiLV22，5。5目前，这种病毒继续在全球传播，可能通过受感染的活鱼66，77的运动，而通过冷冻罗非鱼或其产品传播病毒的风险是有限的8。由于TiLV感染造成的大量死亡率有可能对罗非鱼行业产生重大有害的经济影响。例如，埃及夏季死亡率综合征与TiLV感染有关的经济影响计算为1亿美元。因此，必须开发一种快速和适当的诊断方法，以促进在养鱼场控制这种疾病。
到目前为止，TiLVD的诊断一直基于分子检测、病毒隔离和组织病理学。不同的PCR协议和引素已经开发为TiLV诊断10，11。10,例如，一种基于SYBR的绿色反向转录定量PCR（RT-qPCR）方法，其检测灵敏度为仅两个拷贝/μL，用于TiLV检测10。其他用于TiLV检测的PCR方法包括TaqMan定量PCR11、RT-PCR2、嵌套RT-PCR12和半嵌套11RT-PCR13。1213然而，这些方法需要先进的实验室设备和相对较长的时间来产生结果，由于反应的复杂性，这使得它们不适合现场应用。
循环介导的等温放大（LAMP）测定是一种快速、简单、实用的场内应用14、15。14,该技术采用绞线位移反应原理，而扩增反应在等温条件下运行，没有复杂和昂贵的热循环器14，15。14,因此，放大的LAMP产品或RT-LAMP产品在阶梯状带中进行分析，使用加糖凝胶电泳，带有荧光染色，以安全可视化DNA或RNA14，或用肉眼观察是否存在浊度或白色沉淀物16、17、18。,17,18由于这些原因，该技术已用于现场检测不同的鱼类病原体17、18、19、20、21、22、23、24、25、26、27。17,18,19,20,21,22,23,24,25,26,27本研究的目的是建立一个快速，敏感和准确的RT-LAMP检测的TiLV检测。RT-LAMP测定在30分钟内提供鱼样中TiLV的筛选。该技术可应用于TiLVD的诊断和监测。

<table border="0" cellpadding="0" cellspacing="0" style="width:961px;" width="961">
	<colgroup>
		<col />
		<col />
		<col />
		<col />
	</colgroup>
	<tbody>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">Tissue collection:</td>
			<td style="width:224px;"></td>
			<td style="width:188px;"></td>
			<td style="width:295px;"></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">Clove oil</td>
			<td style="width:224px;">Better Pharma</td>
			<td style="width:188px;">N/A</td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:255px;">Tricaine methanesulfonate</td>
			<td style="width:224px;">Sigma-Aldrich</td>
			<td style="width:188px;">E10521</td>
			<td>An alternative option to clove oil</td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:255px;">RNA extraction:</td>
			<td style="width:224px;"></td>
			<td style="width:188px;"></td>
			<td></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:255px;">Acid guanidinium-phenol based reagent (TRIzol reagent)</td>
			<td style="width:224px;">ThermoFisher Scientific Corp.</td>
			<td style="width:188px;">15596026</td>
			<td style="width:295px;"></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:255px;">Acid guanidinium-phenol based reagent (GENEzol reagent)</td>
			<td style="width:224px;">Geneaid</td>
			<td style="width:188px;">GZR100</td>
			<td style="width:295px;"></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">Direct-zol RNA Kit:</td>
			<td style="width:224px;">Zymo Research</td>
			<td style="width:188px;">R2071</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">- Direct-zol RNA PreWash</td>
			<td style="width:224px;"></td>
			<td style="width:188px;"></td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">- RNA Wash Buffer</td>
			<td style="width:224px;"></td>
			<td style="width:188px;"></td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">- DNase/RNase-free water</td>
			<td style="width:224px;"></td>
			<td style="width:188px;"></td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">- Zymo-spin IIICG columns</td>
			<td style="width:224px;"></td>
			<td style="width:188px;"></td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:255px;">- Collection Tubes</td>
			<td style="width:224px;"></td>
			<td style="width:188px;"></td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:255px;">RT-LAMP:</td>
			<td style="width:224px;"></td>
			<td style="width:188px;"></td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">1x SD II reaction buffer</td>
			<td style="width:224px;">Biotechrabbit</td>
			<td style="width:188px;">BR1101301</td>
			<td></td>
		</tr>
		<tr height="25">
			<td height="25" style="height:25px;width:255px;">Magnesium sulfate (MgSO4)</td>
			<td style="width:224px;">Sigma-Aldrich</td>
			<td style="width:188px;">7487-88-9</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">dNTP set</td>
			<td style="width:224px;">Bioline</td>
			<td style="width:188px;">BIO-39053</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">Betaine</td>
			<td style="width:224px;">Sigma-Aldrich</td>
			<td style="width:188px;">B2629</td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:255px;">Calcein mixture</td>
			<td style="width:224px;">Merck</td>
			<td style="width:188px;">1461-15-0</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">Bst DNA polymerase</td>
			<td style="width:224px;">Biotechrabbit</td>
			<td style="width:188px;">BR1101301</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">AMV reverse transcriptase</td>
			<td style="width:224px;">Promega</td>
			<td style="width:188px;">M510A</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">Nuclease-free water</td>
			<td style="width:224px;">Invitrogen</td>
			<td style="width:188px;">10320995</td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:255px;">Elite dry bath incubator, single unit</td>
			<td style="width:224px;">Major Science</td>
			<td style="width:188px;">EL-01-220</td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:255px;">Gel electrophoresis:</td>
			<td style="width:224px;"></td>
			<td style="width:188px;"></td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">Agarose</td>
			<td style="width:224px;">Vivantis Technologies</td>
			<td style="width:188px;">PC0701-500G</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">Tris-borate-EDTA (TBE) buffer</td>
			<td style="width:224px;">Sigma-Aldrich</td>
			<td style="width:188px;">SRE0062</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">Tris-acetic-EDTA (TAE) buffer:</td>
			<td style="width:224px;"></td>
			<td style="width:188px;"></td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">- Tris</td>
			<td style="width:224px;">Vivantis Technologies</td>
			<td style="width:188px;">PR0612-1KG</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">- Acetic acid (glacial), EMSURE</td>
			<td style="width:224px;">Merck Millipore</td>
			<td style="width:188px;">1000632500</td>
			<td></td>
		</tr>
		<tr height="63">
			<td height="63" style="height:63px;width:255px;">- Disodium Ethylenediaminetetraacetate dihydrate (EDTA), Vetec</td>
			<td style="width:224px;">Sigma-Aldrich</td>
			<td style="width:188px;">V800170-500G</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">Neogreen</td>
			<td style="width:224px;">NeoScience Co., Ltd.</td>
			<td style="width:188px;">GR107</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">DNA gel loading dye (6X)</td>
			<td style="width:224px;">ThermoFisher Scientific Corp.</td>
			<td style="width:188px;">R0611</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">DNA ladder and markers</td>
			<td style="width:224px;">Vivantis Technologies</td>
			<td style="width:188px;">PC701-100G</td>
			<td></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:255px;">Mini Ready Sub-Cell GT (Horizontal electrophoresis system)</td>
			<td style="width:224px;">Bio-Rad</td>
			<td style="width:188px;">1704487</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">PowerPac HC power supply</td>
			<td style="width:224px;">Bio-Rad</td>
			<td style="width:188px;">1645052</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">Gel Doc EZ System</td>
			<td style="width:224px;">Bio-Rad</td>
			<td style="width:188px;">1708270</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">UV sample tray</td>
			<td style="width:224px;">Bio-Rad</td>
			<td style="width:188px;">1708271</td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:255px;">N&#945;BI imager</td>
			<td style="width:224px;">Neogene Science</td>
			<td style="width:188px;"></td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:255px;">cDNA synthesis:</td>
			<td style="width:224px;"></td>
			<td style="width:188px;"></td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">ReverTra Ace qPCR RT Kit</td>
			<td style="width:224px;">Toyobo</td>
			<td style="width:188px;">FSQ-101</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">Viva cDNA Synthesis Kit</td>
			<td style="width:224px;">Vivantis Technologies</td>
			<td style="width:188px;">cDSK01</td>
			<td>An alternative option for cDNA synthesis</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:255px;">NanoDrop2000 (microvolume spectrophotometer)</td>
			<td style="width:224px;">ThermoFisher Scientific Corp.</td>
			<td style="width:188px;">ND-2000</td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:255px;">T100 Thermal Cycler</td>
			<td style="width:224px;">Bio-Rad</td>
			<td style="width:188px;">1861096</td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:255px;">RT-qPCR:</td>
			<td style="width:224px;"></td>
			<td style="width:188px;"></td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">iTaq Universal SYBR Green Supermix</td>
			<td style="width:224px;">Bio-Rad</td>
			<td style="width:188px;">1725120</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">Nuclease-free water, sterile water</td>
			<td style="width:224px;">MultiCell</td>
			<td style="width:188px;">809-115-CL</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">8-tube PCR strips, white</td>
			<td style="width:224px;">Bio-Rad</td>
			<td style="width:188px;">TLS0851</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">Flat PCR tube 8-cap strips, optical</td>
			<td style="width:224px;">Bio-Rad</td>
			<td style="width:188px;">TCS0803</td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:255px;">CFX96 Touch Thermal Cycler</td>
			<td style="width:224px;">Bio-Rad</td>
			<td style="width:188px;">1855196</td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:255px;">General equipment and materials:</td>
			<td style="width:224px;"></td>
			<td style="width:188px;"></td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">Mayo scissors</td>
			<td style="width:224px;"></td>
			<td style="width:188px;">N/A</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">Forceps</td>
			<td style="width:224px;"></td>
			<td style="width:188px;">N/A</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">Vortex Genie 2 (vortex mixer)</td>
			<td style="width:224px;">Scientific Industries</td>
			<td style="width:188px;"></td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">Microcentrifuge LM-60</td>
			<td style="width:224px;">LioFuge</td>
			<td style="width:188px;">CM610</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">Corning LSE mini microcentrifuge</td>
			<td style="width:224px;">Corning</td>
			<td style="width:188px;">6765</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">Pipettes</td>
			<td style="width:224px;">Rainin</td>
			<td style="width:188px;">Pipete-Lite XLS</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">QSP filtered pipette tips</td>
			<td style="width:224px;">Quality Scientific Plastics</td>
			<td style="width:188px;">TF series</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:255px;">Corning Isotip filtered tips</td>
			<td style="width:224px;">Merck</td>
			<td style="width:188px;">CLS series</td>
			<td></td>
		</tr>
		<tr height="43">
			<td height="43" style="height:43px;width:255px;">Nuclease-free 1.5 mL microcentrifuge tubes, NEST</td>
			<td style="width:224px;">Wuxi NEST Biotechnology</td>
			<td style="width:188px;">615601</td>
			<td></td>
		</tr>
	</tbody>
</table>

reverse transcription loop-mediated isothermal amplification (rt-lamp) assay for the specific and rapid detection of tilapia lake virus

罗非鱼湖病毒病（TiLVD）是罗非鱼湖病毒（TiLV）引起的罗非鱼病毒病，是水产养殖业的一个长期挑战，导致世界许多地区罗非鱼的大规模发病率和死亡率。因此，有必要对TiLV感染进行有效、快速和准确的诊断检测，以检测最初的感染并防止该病在水产养殖中传播。本研究提出了一种高度灵敏、实用的逆转录环介导的等温放大（RT-LAMP）方法，以检测鱼组织中的罗非鱼湖病毒。对受感染样本的RT-qPCR和RT-LAMP检测的比较显示，63（100%）有阳性结果和 51 （80.95%）样本。此外，对未感染样本的分析表明，所有63个未受感染组织均对RT-qPCR和RT-LAMP检测均产生阴性结果。使用RT-LAMP评估了罗非鱼中5种病原体的交叉反应，所有测试均显示阴性结果。从受感染的鱼获得的肝脏和粘液样本均显示使用RT-LAMP方法的可比结果，表明粘液可用于RT-LAMP作为非致命性检测，以避免杀死鱼。结果表明，该检测结果表明，在1小时内对罗非鱼组织进行TiLV检测提供了一种有效的方法。因此，该方法推荐作为农场的筛选工具，用于快速诊断TiLV。

在这项研究中，开发了RT-LAMP检测，以检测罗非鱼的TiLV感染。2015年至2016年间，从泰国不同地区的14个农场采集了经测试的样本。受感染和未感染的鱼主要根据身体诊断和有症状的TiLVD的出现进行分组。TiLV感染随后在收集过程后使用RT-PCR得到确认。选择阿加罗斯凝胶电泳和发光绿色检测作为LAMP安培的评估方法（图2）。受感染和未感染的罗非鱼的肝脏和粘液的特点是TiLV疾病症?...

Watch this Scientific Journal Video about Reverse Transcription Loop-Mediated Isothermal Amplification RT-LAMP Assay for the Specific and Rapid Detection of Tilapia Lake Virus at JoVE.com

Reverse Transcription Loop-Mediated Isothermal Amplification RT-LAMP Assay for the Specific and Rapid Detection of Tilapia Lake Virus

与传统RT-PCR技术相比，我们提出了一种RT-LAMP测定方法，用于在相对较短的时间内使用简单的仪器检测罗非鱼中的TiLV。该议定书可能有助于控制TiLVD的流行传播，特别是在发展中国家。

反向转录循环介导的等温放大（RT-LAMP）测定，用于对罗非鱼湖病毒进行特定和快速检测

Tilapia lake virus disease (TiLVD), an emerging viral disease in tilapia caused by the tilapia lake virus (TiLV), is a persistent challenge in the ...

罗非鱼湖病毒是一种新出现的病毒和传染性病原体，在罗非鱼及其杂交物种中导致高死亡率。由于罗非鱼是许多发展中国家的主要蛋白质来源，新的病毒感染对罗非鱼养殖产生了巨大影响，也威胁着世界粮食安全。开发一种快速、准确、灵敏的检测鱼组织病毒的方法，将有助于疾病控制，减少病毒的影响。在这段视频中，我们将展示逆转录环中位等温扩增，或RT-LAMP检测，用于在鱼样本中快速检测罗非鱼湖病毒。第二部分，RNA提取。首先，将3250毫克的肝组织加入无菌的1.5毫升微离心管中，含有600至1000微升酸瓜尼丁酚基试剂，并薄荷直到均质。在10，000 RCF下离心30秒，然后将上一代转移到一个新的管子中。将95%乙醇的等量加入管中，彻底混合。将溶液转移到旋转柱中，放入收集管中，然后在10，000 RCF下离心30秒。丢弃流经，将柱转移到新的收集管中。将400微升RNA PreWash加入柱中，以10，000 RCF离心30秒。放弃流式，然后重复此步骤。将700微升RNA洗涤缓冲液加入柱，以10，000 RCF离心两分钟。之后，将柱转移到无菌的1.5毫升微离心管中。最后，用100微升、无核酸酶水将RNA放入柱基中，并在10000 RCF下离心30秒。第三部分，底首相设计。PrimerExplorer 版本 4 是用于设计高效 LAMP 或 RT-LAMP 底头笔的最常用生物信息学工具，其网站上提供了软件的手册。在这里，四个特定的底因，由两个内部和两个外部底向，旨在识别六个不同的区域，在部分3的TiLV，起源于泰国。进入视频中显示的链接网站后，单击 PrimerExplorer V4。选择包含 TiLV 段 3 序列的文件，采用 FASTA 格式，从 GenBank 访问的数字 KX631923 或罗非鱼湖病毒 TV1 段 3 检索，然后单击底图设计按钮。单击"生成"按钮后，软件将进行处理，结果将显示。在优化了LAML放大序列后，总共为本研究选择了一对外部底转和两对内部底转，以检测TiLV感染。此处显示了这组底向。第四部分，RT-LAMP的演示。专用于罗非鱼湖病毒的RT-LAMP主混合物，由以下化学品组成。使用表中显示的化学品准备主混合物。将 22 微升主混合剂分配到无菌 1.5 毫升微离心管中。然后，将RNA模板的三微升加入反应管。对于负对，使用蒸馏水代替RNA材料，并很好地混合。在65摄氏度下孵育反应60分钟，随后在80摄氏度下孵育10分钟。孵育30分钟后，肉眼可以直观地观察热量变化。在适当时，我们可以确认RT-LAMP的测定结果，在1.5%的阿加罗斯凝胶上执行凝胶电泳，以100伏特常数运行40分钟，从而将1千基对分子大小的DNA梯子作为标记加载，以确定片段大小。第五部分，具有代表性的结果和解释。经过30分钟的孵育，在365纳米波长的紫外光下，在受感染的样品中明显观察到了TiLV的阳性放大反应，而负对照的颗粒荧光反应则具有明显且略带无色溶液。相应地，在阿加罗斯凝胶电泳上确认了RT-LAMP产品的放大，显示了倒置DNA重复的多重放大的各种尺寸，在TiLV感染的样品中形成UV灯下的干环结构，而阴性控制井中没有显示带，其结果与RT-LAMP测定的结果一致。因此，要减少罗非鱼湖病毒的传播，立即筛选这些受感染的鱼类，使用有效的诊断方法，是重要的关键之一。因此，新开发的RT-LAMP检测应提供一种快速、灵敏的诊断工具，用于生物安全措施。测定可用于实验室或现场设施。我们希望，将实施这种方法，以筛查受感染的鱼类种群，这可能导致罗非鱼湖病毒的传播减少。

Research

JoVE Journal

Immunology and Infection

Reverse Transcription Loop-Mediated Isothermal Amplification (RT-LAMP) Assay for the Specific and Rapid Detection of Tilapia Lake Virus

Combination of Adhesive-tape-based Sampling and Fluorescence in situ Hybridization for Rapid Detection of Salmonella on Fresh Produce

Combination of Adhesive-tape-based Sampling and Fluorescence in situ Hybridization for Rapid Detection of Salmonella on Fresh Produce

胶粘剂基于磁带的采样和荧光组合原位杂交快速检测沙门氏菌新鲜农产品

This protocol describes a simple approach for adhesive-tape-based sampling of tomato and other fresh produce surfaces, followed by on-tape fluorescence in ...

科研

免疫与感染

Detection of Infectious Virus from Field-collected Mosquitoes by Vero Cell Culture Assay

从现场收集到的蚊子传染病毒Vero细胞培养法检测

Mosquitoes transmit a number of distinct viruses including important human pathogens such as West Nile virus, dengue virus, and chickungunya virus. Many ...

Microwave Assisted Rapid Diagnosis of Plant Virus Diseases by Transmission Electron Microscopy

微波辅助植物病毒病的快速诊断用透射电子显微镜

Investigations of ultrastructural changes induced by viruses are often necessary to clearly identify viral diseases in plants. With conventional sample ...

High-throughput Detection Method for Influenza Virus

流感病毒的高通量检测方法

Influenza virus is a respiratory pathogen that causes a high degree of morbidity and mortality every year in multiple parts of the world. Therefore, ...

Rapid Screening of HIV Reverse Transcriptase and Integrase Inhibitors

HIV逆转录酶和整合酶抑制剂的快速筛选

Although a number of anti HIV drugs have been approved, there are still problems with toxicity and drug resistance. This demonstrates a need to identify ...

Loop-mediated Isothermal Amplification (LAMP) Assays for the Species-specific Detection of Eimeria that Infect Chickens

Loop-mediated Isothermal Amplification LAMP Assays for the Species-specific Detection of Eimeria that Infect Chickens

环介导等温扩增（LAMP）法进行的物种特异性检测<em&gt;艾美耳球虫</em&gt;可感染鸡

Eimeria species parasites, protozoa which cause the enteric disease coccidiosis, pose a serious threat to the production and welfare of chickens. In the ...

Nasal Wipes for Influenza A Virus Detection and Isolation from Swine

鼻湿巾从猪流感病毒检测和​​隔离

Surveillance for influenza A viruses in swine is critical to human and animal health because influenza A virus rapidly evolves in swine populations and ...

The Development of Lyophilized Loop-mediated Isothermal Amplification Reagents for the Detection of Coxiella burnetii

The Development of Lyophilized Loop-mediated Isothermal Amplification Reagents for the Detection of Coxiella burnetii

冻干环介导等温扩增试剂的检测中的发展<em&gt;贝氏柯克斯体</em

Coxiella burnetii, the agent causing Q fever, is an obligate intracellular bacterium. PCR based diagnostic assays have been developed for detecting C. ...

In Vivo Assay for Detection of Antigen-specific T-cell Cytolytic Function Using a Vaccination Model

In Vivo Assay for Detection of Antigen-specific T-cell Cytolytic Function Using a Vaccination Model

在体内应用免疫模型检测抗原特异性 T 细胞细胞功能的试验

Current methodologies for antigen-specific killing are limited to in vitro use or utilized in infectious disease models. However, there is not a protocol ...

Zika Virus Specific Diagnostic Epitope Discovery

Zika 病毒特定诊断表位发现

High-density peptide microarrays allow screening of more than six thousand peptides on a single standard microscopy slide. This method can be applied for ...