Name: high-throughput screening and biosensing with fluorescent c. elegans strains
Uploaded: 2011-05-19T13:00:00
Description: Watch this Scientific Journal Video about High-throughput Screening and Biosensing with Fluorescent C. elegans Strains at JoVE.com

C. Элеганс трансгены были предоставлены Caenorhabditis генетический центр (Университет Миннесоты, Миннеаполис, Миннесота). Эта работа была поддержана NIH грант R21 NS0667678-01 для KS. Все авторы участвовали в сборе, анализе и интерпретации данных. CKL, KS, и КЗК участие в написании и пересмотра рукописи.

1. Подготовка бактериальных пищевых червь День 1 <ol><li> Добавьте 5 мл насыщенного Е. OP50 кишечной бактериальной культуры до 500 мл бульона Потрясающе дополнена с 50 мкг / мл стрептомицина и расти в инкубатор встряхивания (225 оборотов в минуту) в течение ночи при темпера?...

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	<li>Simeonov, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Quantitative+high-throughput+screen+identifies+inhibitors+of+the+Schistosoma+mansoni+redox+cascade.">Quantitative high-throughput screen identifies inhibitors of the Schistosoma mansoni redox cascade.</a> PLoS Negl Trop Dis. 2, e127-e127 (2008).</li><li>Giacomotto, J., Segalat, L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=High-throughput+screening+and+small+animal+models,+where+are+we.">High-throughput screening and small animal models, where are we.</a> Br J Pharmacol. 160, 204-216 (2010).</li><li>Artal-Sanz, M., de Jong, L., Tavernarakis, N. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Caenorhabditis+elegans:+a+versatile+platform+for+drug+discovery.">Caenorhabditis elegans: a versatile platform for drug discovery.</a> Biotechnol J. 1, 1405-1418 (2006).</li><li>An, J. H., Blackwell, T. K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=SKN-1+links+C.+elegans+mesendodermal+specification+to+a+conserved+oxidative+stress+response.">SKN-1 links C. elegans mesendodermal specification to a conserved oxidative stress response.</a> Genes Dev. 17, 1882-1893 (2003).</li><li>Choe, K., Przybysz, A., Strange, K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+WD40+repeat+protein+WDR-23+functions+with+the+CUL4/DDB1+ubiquitin+ligase+to+regulate+nuclear+abundance+and+activity+of+SKN-1+in+Caenorhabditis+elegans.">The WD40 repeat protein WDR-23 functions with the CUL4/DDB1 ubiquitin ligase to regulate nuclear abundance and activity of SKN-1 in Caenorhabditis elegans.</a> Mol Cell Biol. 29, 2704-2715 (2009).</li><li>Hasegawa, K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Acrylamide-responsive+genes+in+the+nematode+Caenorhabditis+elegans.">Acrylamide-responsive genes in the nematode Caenorhabditis elegans.</a> Toxicol. Sci. 101, 215-225 (2008).</li><li>Tullet, J. M. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Direct+inhibition+of+the+longevity-promoting+factor+SKN-1+by+insulin-like+signaling+in+C.+elegans.">Direct inhibition of the longevity-promoting factor SKN-1 by insulin-like signaling in C. elegans.</a> Cell. 132, 1025-1038 (2008).</li><li>Oliveira, R. P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Condition-adapted+stress+and+longevity+gene+regulation+by+Caenorhabditis+elegans+SKN-1/Nrf.">Condition-adapted stress and longevity gene regulation by Caenorhabditis elegans SKN-1/Nrf.</a> Aging Cell. , (2009).</li><li>Park, S. -. K., Tedesco, P. M., Johnson, T. E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Oxidative+stress+and+longevity+in+Caenorhabditis+elegans+as+mediated+by+SKN-1.">Oxidative stress and longevity in Caenorhabditis elegans as mediated by SKN-1.</a> Aging Cell. 8, 258-269 (2009).</li><li>Hayes, J. D., McMahon, M., Chowdhry, S., Dinkova-Kostova, A. T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Cancer+chemoprevention+mechanisms+mediated+through+the+Keap1-Nrf2+pathway.">Cancer chemoprevention mechanisms mediated through the Keap1-Nrf2 pathway.</a> Antioxid Redox Signal. , (2010).</li><li>Kwak, M. K., Kensler, T. W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Targeting+NRF2+signaling+for+cancer+chemoprevention.">Targeting NRF2 signaling for cancer chemoprevention.</a> Toxicol Appl Pharmacol. 244, 66-76 (2010).</li><li>Leiser, S. F., Miller, R. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Nrf2+signaling,+a+mechanism+for+cellular+stress+resistance+in+long-lived+mice.">Nrf2 signaling, a mechanism for cellular stress resistance in long-lived mice.</a> Mol Cell Biol. 30, 871-884 (2010).</li><li>Link, C. D., Johnson, C. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Reporter+transgenes+for+study+of+oxidant+stress+in+Caenorhabditis+elegans.">Reporter transgenes for study of oxidant stress in Caenorhabditis elegans.</a> Methods Enzymol. 353, 497-505 (2002).</li><li>Vanduyn, N., Settivari, R., Wong, G., Nass, R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=SKN-1/Nrf2+inhibits+dopamine+neuron+degeneration+in+a+Caenorhabditis+elegans+model+of+methylmercury+toxicity.">SKN-1/Nrf2 inhibits dopamine neuron degeneration in a Caenorhabditis elegans model of methylmercury toxicity.</a> Toxicol Sci. , (2010).</li><li>Hasegawa, K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+rapid+and+inexpensive+method+to+screen+for+common+foods+that+reduce+the+action+of+acrylamide,+a+harmful+substance+in+food.">A rapid and inexpensive method to screen for common foods that reduce the action of acrylamide, a harmful substance in food.</a> Toxicol Lett. 175, 82-88 (2007).</li><li>Chase, D. L., Pepper, J. S., Koelle, M. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Mechanism+of+extrasynaptic+dopamine+signaling+in+Caenorhabditis+elegans.">Mechanism of extrasynaptic dopamine signaling in Caenorhabditis elegans.</a> Nature Neuroscience. 7, 1096-1103 (2004).</li><li>Hope, I. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=.">.</a> C. elegans, a Practical Guide. , (2005).</li><li>Pulak, R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Techniques+for+analysis,+sorting,+and+dispensing+of+C.+elegans+on+the+COPAS+flow-sorting+system.">Techniques for analysis, sorting, and dispensing of C. elegans on the COPAS flow-sorting system.</a> Methods Mol Biol. 351, 275-286 (2006).</li></ol>

Мы представляем метод выращивания и приготовления большого количества трансгенных нематод. Оборудования, используемых для культивирования червей является стандартным для лабораторий, осуществляющих молекулярное клонирование и наливных и флуоресценции оборудования является станд...

<table border="1"><tbody><tr><th> Название реагента </th><th> Компания </th><th> Номер в каталоге </th><th> Комментарии (необязательно) </th></tr><tr><td> LB бульоне </td><td> Исследования Продукты интернэшнл корп </td><td> L24066 </td><td></td></tr><tr><td> Потрясающе бульон </td><td> Исследования Продукты интернэшнл корп </td><td> T15100 </td><td></td></tr><tr><td> Synergy ™ HT Multi-режим Считыватель микропланшетов </td><td> Биотек </td><td></td><td> Фильтры: GFP 485/20ex 528/20em; RFP 540/25ex 590/35em </td></tr><tr><td> MicroFlo Выберите диспенсер </td><td> Биотек </td><td></td><td></td></tr><tr><td> Worm дозирования колбу </td><td> Южный научный Inc, Micanopy, FL </td><td></td><td> Custom собраны (352) 284-2531 </td></tr><tr><td> 384 микропланшетов </td><td> Greiner Bio-One </td><td> 5678-1209 </td><td></td></tr><tr><td> Дышащие уплотнительная лента </td><td> Nunc </td><td> 241205 </td><td></td></tr><tr><td> (5-гидрокси-р-naphthoqinone) юглон </td><td> ACROS </td><td> 121640010 </td><td> Юглон растворяется в ДМСО </td></tr><tr><td> ДМСО </td><td> Sigma-Aldrich </td><td> D-5879 </td><td></td></tr><tr><td> C. Элеганс трансгенных напряжение </td><td> Автор лаборатории </td><td> VP596 </td><td> Pgst-4:: GFP и PDOP-3:: RFP </td></tr></tbody></table>

high-throughput screening and biosensing with fluorescent c. elegans strains

High-throughput screening (HTS) is a powerful approach for identifying chemical modulators of biological processes. However, many compounds identified in screens using cell culture models are often found to be toxic or pharmacologically inactive in vivo1-2. Screening in whole animal models can help avoid these pitfalls and streamline the path to drug development.
C. elegans is a multicellular model organism well suited for HTS. It is small (&lt;1 mm) and can be economically cultured and dispensed in liquids. C. elegans is also one of the most experimentally tractable animal models permitting rapid and detailed identification of drug mode-of-action3.
We describe a protocol for culturing and dispensing fluorescent strains of C. elegans for high-throughput screening of chemical libraries or detection of environmental contaminants that alter the expression of a specific gene. Large numbers of developmentally synchronized worms are grown in liquid culture, harvested, washed, and suspended at a defined density. Worms are then added to black, flat-bottomed 384-well plates using a peristaltic liquid dispenser. Small molecules from a chemical library or test samples (e.g., water, food, or soil) can be added to wells with worms. In vivo, real-time fluorescence intensity is measured with a fluorescence microplate reader. This method can be adapted to any inducible gene in C. elegans for which a suitable reporter is available. Many inducible stress and developmental transcriptional pathways are well defined in C. elegans and GFP transgenic reporter strains already exist for many of them4. When combined with the appropriate transgenic reporters, our method can be used to screen for pathway modulators or to develop robust biosensor assays for environmental contaminants. 
We demonstrate our C. elegans culture and dispensing protocol with an HTS assay we developed to monitor the C. elegans cap &#x2018;n&#x2019; collar transcription factor SKN-1. SKN-1 and its mammalian homologue Nrf2 activate cytoprotective genes during oxidative and xenobiotic stress5-10. Nrf2 protects mammals from numerous age-related disorders such as cancer, neurodegeneration, and chronic inflammation and has become a major chemotherapeutic target11-13.Our assay is based on a GFP transgenic reporter for the SKN-1 target gene gst-414, which encodes a glutathione-s transferase6. The gst-4 reporter is also a biosensor for xenobiotic and oxidative chemicals that activate SKN-1 and can be used to detect low levels of contaminants such as acrylamide and methyl-mercury15-16.

Watch this Scientific Journal Video about High-throughput Screening and Biosensing with Fluorescent C. elegans Strains at JoVE.com

High-throughput Screening and Biosensing with Fluorescent C. elegans Strains

Процедура жидкой основе культивирования и отпуск<em&gt; С. Элеганс</em&gt; Штаммов выражения флуоресцентных белков репортер рассказал, что не требует дорогостоящего оборудования сортировки. Этот подход может быть применен к многочисленным индуцибельной<em&gt; С. Элеганс</em&gt; Генов для обнаружения наркотиков или биодатчиков загрязняющих веществ.

Высокопроизводительный скрининг и биодатчиков с люминесцентными С. Элеганс Штаммы

High-throughput screening (HTS) is a powerful approach for identifying chemical modulators of biological processes.  However, many compounds identified in ...

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Biology

High-throughput Screening and Biosensing with Fluorescent C. elegans Strains

The Production of C. elegans Transgenes via Recombineering with the galK Selectable Marker

The Production of C. elegans Transgenes via Recombineering with the galK Selectable Marker

Производство С. Элеганс Трансгенов через Recombineering с GalK Выбор маркера

The creation of transgenic animals is widely utilized in C. elegans research including the use of GFP fusion proteins to study the regulation and ...

High Throughput Screening of Fungal Endoglucanase Activity in Escherichia coli

High Throughput Screening of Fungal Endoglucanase Activity in Escherichia coli

Высокопроизводительного скрининга грибной активность в эндоглюканазы Кишечной палочки</em

Cellulase enzymes (endoglucanases, cellobiohydrolases, and &beta;-glucosidases) hydrolyze cellulose into component sugars, which in turn can be converted ...

RNAi Screening to Identify Postembryonic Phenotypes in C. elegans

RNAi Screening to Identify Postembryonic Phenotypes in C. elegans

RNAi скрининга для выявления Постэмбриональное фенотипы в С. Элеганс</em

C. elegans has proven to be a valuable model system for the discovery and functional characterization of many genes and gene pathways1. More sophisticated ...

Quantitative and Automated High-throughput Genome-wide RNAi Screens in C. elegans

Quantitative and Automated High-throughput Genome-wide RNAi Screens in C. elegans

Количественные и автоматизированных высокой пропускной генома RNAi экраны в С. Элеганс</em

RNA interference is a powerful method to understand gene function, especially when conducted at a whole-genome scale and in a quantitative context. In C. ...

High-throughput Screening for Small-molecule Modulators of Inward Rectifier Potassium Channels

Высокопроизводительного скрининга для малых молекул модуляторы калиевых каналов входящего Rectifier

Specific members of the inward rectifier potassium (Kir) channel family are postulated drug targets for a variety of disorders, including hypertension, ...

C. elegans Chemotaxis Assay

C. elegans Chemotaxis Assay

C. Элеганс Анализ хемотаксиса

Many organisms use chemotaxis to seek out food sources, avoid noxious substances, and find mates.  Caenorhabditis elegans has impressive chemotaxis ...

Biochemical and High Throughput Microscopic Assessment of Fat Mass in Caenorhabditis Elegans

Biochemical and High Throughput Microscopic Assessment of Fat Mass in Caenorhabditis Elegans

Биохимические и высокая пропускная способность Микроскопическая оценка жировой массы в<em&gt; Caenorhabditis Элеганс</em

The nematode C. elegans has emerged as an important  model for the study of conserved genetic pathways regulating fat metabolism as  it relates to human ...

High-throughput Functional Screening using a Homemade Dual-glow Luciferase Assay

Высокая пропускная Функциональная Скрининг с использованием Домашнее двойного свечения люциферазы

We present a rapid and inexpensive high-throughput screening protocol to identify transcriptional regulators of alpha-synuclein, a gene associated with ...

High-throughput Screening for Chemical Modulators of Post-transcriptionally Regulated Genes

Высокопроизводительный скрининг для химических модуляторов посттранскрипционно регулируемых генов

Both transcriptional and post-transcriptional regulation have a profound impact on genes expression. However, commonly adopted cell-based screening assays ...

Identification of Kinase-substrate Pairs Using High Throughput Screening

Идентификация киназы-подложки пар Использование высокопроизводительного скрининга


We have developed a screening platform to identify dedicated human protein kinases for phosphorylated substrates which can be used to elucidate novel ...