Name: dna vector-based rna interference to study gene function in cancer
Uploaded: 2012-06-04T13:00:00
Description: Watch this Scientific Journal Video about DNA Vector-based RNA Interference to Study Gene Function in Cancer at JoVE.com

Эта работа была частично поддержана исследований ученый грантов (116403-RSG-09-082-01-ГГО) из Американского онкологического общества и очный средств Wake Forest University Health Sciences для GS. DBS была поддержана NCI обучение грант 5T32CA079448.

1. Генерация Конструкции ShRNA <ol><li> Определить миРНК-последовательности-мишени (20-23 нуклеотидов) на основе ранее опубликованных критериев 6 или использовать веб-сервер на основе алгоритма, такие как &quot;миРНК целевой Finder&quot; от Ambion и GenScript. </li><li> Синтез олигонуклеотидов на основе диз?...

<ol>
	<li>Elbashir, S. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Duplexes+of+21-nucleotide+RNAs+mediate+RNA+interference+in+cultured+mammalian+cells.">Duplexes of 21-nucleotide RNAs mediate RNA interference in cultured mammalian cells.</a> Nature. 411, 494-498 (2001).</li><li>Sui, G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+DNA+vector-based+RNAi+technology+to+suppress+gene+expression+in+mammalian+cells.">A DNA vector-based RNAi technology to suppress gene expression in mammalian cells.</a> Proc. Natl. Acad. Sci. U.S.A. 99, 5515-5520 (2002).</li><li>Brummelkamp, T. R., Bernards, R., Agami, R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+system+for+stable+expression+of+short+interfering+RNAs+in+mammalian+cells.">A system for stable expression of short interfering RNAs in mammalian cells.</a> Science. 296, 550-553 (2002).</li><li>Zhang, Q., Stovall, D. B., Inoue, K., Sui, 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+oncogenic+role+of+Yin+Yang+1.">The oncogenic role of Yin Yang 1.</a> Crit. Rev. Oncog. 16, 163-197 (2011).</li><li>Wan, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Yin+Yang+1+plays+an+essential+role+in+breast+cancer+and+negatively+regulates+p27.">Yin Yang 1 plays an essential role in breast cancer and negatively regulates p27.</a> Am. J. Pathol. , (2012).</li><li>Sui, G., Shi, Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Gene+silencing+by+a+DNA+vector-based+RNAi+technology.">Gene silencing by a DNA vector-based RNAi technology.</a> Methods in Molecular Biology. 309, 205-218 (2005).</li><li>Trower, M. 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+PCR-based+colony+screening+protocol+for+cloned+inserts.">A rapid PCR-based colony screening protocol for cloned inserts.</a> Methods Mol. 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Gene Ther. 14, 497-507 (2003).</li><li>Zhang, B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+significance+of+controlled+conditions+in+lentiviral+vector+titration+and+in+the+use+of+multiplicity+of+infection+(MOI)+for+predicting+gene+transfer+events.">The significance of controlled conditions in lentiviral vector titration and in the use of multiplicity of infection (MOI) for predicting gene transfer events.</a> Genet Vaccines Ther. 2, 6 (2004).</li><li>Geran, R. I., Greenberg, N. H., MacDonald, M. M., Schumacher, A. M., Abbott, B. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Protocols+for+screening+chemical+agents+and+natural+products+against+animal+tumors+and+other+biological+systems.">Protocols for screening chemical agents and natural products against animal tumors and other biological systems.</a> Cancer Chemother. Rep. 3, 1-103 (1972).</li><li>Massoud, T. F., Gambhir, S. S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Molecular+imaging+in+living+subjects:+seeing+fundamental+biological+processes+in+a+new+light.">Molecular imaging in living subjects: seeing fundamental biological processes in a new light.</a> Genes Dev. 17, 545-580 (2003).</li><li>Inoue, H., Nojima, H., Okayama, H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=High+efficiency+transformation+of+Escherichia+coli+with+plasmids.">High efficiency transformation of Escherichia coli with plasmids.</a> Gene. 96, 23-28 (1990).</li><li>Toledo, J. R., Prieto, Y., Oramas, N., Sanchez, O. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Polyethylenimine-based+transfection+method+as+a+simple+and+effective+way+to+produce+recombinant+lentiviral+vectors.">Polyethylenimine-based transfection method as a simple and effective way to produce recombinant lentiviral vectors.</a> Appl. Biochem. Biotechnol. 157, 538-544 (2009).</li><li>Rubinson, D. 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+lentivirus-based+system+to+functionally+silence+genes+in+primary+mammalian+cells,+stem+cells+and+transgenic+mice+by+RNA+interference.">A lentivirus-based system to functionally silence genes in primary mammalian cells, stem cells and transgenic mice by RNA interference.</a> Nat Genet. 33, 401-406 (2003).</li><li>Sui, G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Yin+Yang+1+is+a+negative+regulator+of+p53.">Yin Yang 1 is a negative regulator of p53.</a> Cell. 117, 859-872 (2004).</li></ol>

Этот протокол описывает метод, чтобы сбить генов использованием ShRNA и визуализировать его биологический эффект использования биолюминесцентного визуализация роста опухолевых клеток в живом организме. Целевой сайт ShRNA не должны содержать любой из трех сайтов рестрикции (BamHI, HindIII ...

В дополнение к обычным лабораторным оборудованием для РНК и белка анализа и клеточных культур, следующие материалы и реактивы, необходимые для этого протокола. <table border="1"><tbody><tr><td> Название реагента </td></tr><tr><td> Механизм Кабинет подходит для 2-го уровня биобезопасности сдерживания </td></tr><tr><td> ПЦР Термоциклер </td></tr><tr><td> Ультрацентрифуге </td></tr><tr><td> Анестезия индукции камеры ИФ мусорщики </td></tr><tr><td> Цифровой штангенциркуль </td></tr><tr><td> ИВИС системы визуализации </td></tr><tr><td> Высококвалифицированные DH5a кишечная палочка </td></tr><tr><td> Ферментами EcoRI, BamHI, HindIII и ограничения </td></tr><tr><td> T4 ДНК-лигазы </td></tr><tr><td> Третье поколение лентивирус упаковке плазмиды VSV-G, pRSV-Rev и pMDLg / pRRE </td></tr></tbody></table> Список материалов

dna vector-based rna interference to study gene function in cancer

RNA interference (RNAi) inhibits gene expression by specifically degrading target mRNAs. Since the discovery of double-stranded small interference RNA (siRNA) in gene silencing1, RNAi has become a powerful research tool in gene function studies. Compared to genetic deletion, RNAi-mediated gene silencing possesses many advantages, such as the ease with which it is carried out and its suitability to most cell lines. Multiple studies have demonstrated the applications of RNAi technology in cancer research. In particular, the development of the DNA vector-based technology to produce small hairpin RNA (shRNA) driven by the U6 or H1 promoter has made long term and inducible gene silencing possible2,3. Its use in combination with genetically engineered viral vectors, such as lentivirus, facilitates high efficiencies of shRNA delivery and/or integration into genomic DNA for stable shRNA expression. 
We describe a detailed procedure using the DNA vector-based RNAi technology to determine gene function, including construction of lentiviral vectors expressing shRNA, lentivirus production and cell infection, and functional studies using a mouse xenograft model. 
Various strategies have been reported in generating shRNA constructs. The protocol described here employing PCR amplification and a 3-fragment ligation can be used to directly and efficiently generate shRNA-containing lentiviral constructs without leaving any extra nucleotide adjacent to a shRNA coding sequence. Since the shRNA-expression cassettes created by this strategy can be cut out by restriction enzymes, they can be easily moved to other vectors with different fluorescent or antibiotic markers. Most commercial transfection reagents can be used in lentivirus production. However, in this report, we provide an economic method using calcium phosphate precipitation that can achieve over 90% transfection efficiency in 293T cells. Compared to constitutive shRNA expression vectors, an inducible shRNA system is particularly suitable to knocking down a gene essential to cell proliferation. We demonstrate the gene silencing of Yin Yang 1 (YY1), a potential oncogene in breast cancer4,5, by a Tet-On inducible shRNA system and its effects on tumor formation. Research using lentivirus requires review and approval of a biosafety protocol by the Biosafety Committee of a researcher's institution. Research using animal models requires review and approval of an animal protocol by the Animal Care and Use Committee (ACUC) of a researcher's institution.

Watch this Scientific Journal Video about DNA Vector-based RNA Interference to Study Gene Function in Cancer at JoVE.com

DNA Vector-based RNA Interference to Study Gene Function in Cancer

РНК-интерференция (RNAi) обладает многими преимуществами по сравнению с геном нокаут и был широко использован в качестве инструмента в геном функциональные исследования. Изобретение векторной ДНК на основе РНК-интерференции технологии сделали долгосрочный и индуцибельной гена нокдаун возможно, а также увеличить возможности генов<em&gt; В естественных условиях</em&gt;.

Векторной ДНК на основе РНК-интерференции по изучению функции генов в Раке

RNA interference (RNAi) inhibits gene expression by specifically degrading target mRNAs. Since the discovery of double-stranded small interference RNA ...

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