Name: microrna detection in prostate tumors by quantitative real-time pcr (qpcr)
Uploaded: 2012-05-16T12:00:00
Description: Watch this Scientific Journal Video about MicroRNA Detection in Prostate Tumors by Quantitative Real-time PCR qPCR at JoVE.com

इस काम कनाडा के कैंसर सोसायटी अनुसंधान संस्थान द्वारा वित्त पोषित किया गया था, कोई अनुदान. +०१९०३८.

<html> 1. प्रोस्टेट नमूना संग्रह <ol><li> Prostatectomy के समय में प्रोस्टेट के नमूने ले लीजिए. नमूना शारीरिक स्थलों का उपयोग कर उन्मुख है. प्रोस्टेट और लाभदायक vesicles के रूप में चित्रित कर रहे हैं: सही पक्ष हरी, बाईं ओर नीला ?...

<ol>
	<li>Reinhart, 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=MicroRNAs+in+plants.">MicroRNAs in plants.</a> Genes Dev. 16, 1616-1616 (2002).</li><li>Xu, P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+Drosophila+microRNA+Mir-14+suppresses+cell+death+and+is+required+for+normal+fat+metabolism.">The Drosophila microRNA Mir-14 suppresses cell death and is required for normal fat metabolism.</a> Curr. Biol. 13, 790 (2003).</li><li>Bueno, M. J., Perez, d. e. C. a. s. t. r. o., I, ., Malumbres, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Control+of+cell+proliferation+pathways+by+microRNAs.">Control of cell proliferation pathways by microRNAs.</a> Cell Cycle. 7, 3143-3143 (2008).</li><li>Friedman, R. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Most+mammalian+mRNAs+are+conserved+targets+of+microRNAs.">Most mammalian mRNAs are conserved targets of microRNAs.</a> Genome Res. 19, 92 (2009).</li><li>Bartel, D. P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=MicroRNAs:+genomics,+biogenesis,+mechanism,+and+function.">MicroRNAs: genomics, biogenesis, mechanism, and function.</a> Cell. 116, 281-281 (2004).</li><li>Croce, C. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Causes+and+consequences+of+microRNA+dysregulation+in+cancer.">Causes and consequences of microRNA dysregulation in cancer.</a> Nat. Rev. Genet. 10, 704 (2009).</li><li>Coppola, V., De, M. R., Bonci, D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=MicroRNAs+and+prostate+cancer.">MicroRNAs and prostate cancer.</a> Endocr. Relat. Cancer. 17, 1-1 (2010).</li><li>Gordanpour, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=miR-221+Is+down-regulated+in+TMPRSS2:ERG+fusion-positive+prostate+cancer.">miR-221 Is down-regulated in TMPRSS2:ERG fusion-positive prostate cancer.</a> Anticancer Res. 31, 403-403 (2011).</li><li>Nam, R. K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Expression+of+the+TMPRSS2:ERG+fusion+gene+predicts+cancer+recurrence+after+surgery+for+localised+prostate+cancer.">Expression of the TMPRSS2:ERG fusion gene predicts cancer recurrence after surgery for localised prostate cancer.</a> Br. J. Cancer. 97, 1690 (2007).</li><li>Ambs, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Genomic+profiling+of+microRNA+and+messenger+RNA+reveals+deregulated+microRNA+expression+in+prostate+cancer.">Genomic profiling of microRNA and messenger RNA reveals deregulated microRNA expression in prostate cancer.</a> Cancer Res. 68, 6162 (2008).</li><li>Liu, C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+microRNA+miR-34a+inhibits+prostate+cancer+stem+cells+and+metastasis+by+directly+repressing+CD44.">The microRNA miR-34a inhibits prostate cancer stem cells and metastasis by directly repressing CD44.</a> Nat. Med. 17, 211 (2011).</li></ol>

कुछ miRNAs की न्यायपालिका का भाव लगातार किया गया है जब सामान्य 10 ऊतक, और इन miRNAs के कुछ प्रोस्टेट कैंसर के खिलाफ 11 संभावित उपन्यास चिकित्सात्मक एजेंट के रूप में नामित किया गया है की तुलना में प्रोस्टे?...

<table border="1"><tbody><tr><td> अभिकर्मक का नाम </td><td> कंपनी </td><td> सूचीपत्र संख्या </td></tr><tr><td> TRIzol अभिकर्मक </td><td> Invitrogen </td><td> 15,596 </td></tr><tr><td> miScript रिवर्स प्रतिलेखन किट </td><td> क्विएज़न </td><td> 218,061 </td></tr><tr><td> miScript प्राइमर assays </td><td> क्विएज़न </td><td> विशिष्ट प्रयोग </td></tr><tr><td> miScript SYBR ग्रीन पीसीआर किट </td><td> क्विएज़न </td><td> 218,073 </td></tr><tr><td> LightCycler 3.5 वास्तविक समय पीसीआर सिस्टम </td><td> रॉश </td><td></td></tr><tr><td> लाइट Cycler capillaries </td><td> रॉश </td><td> 04929292001 </td></tr><tr><td> NanoDrop 1000 स्पेक्ट्रोफोटोमीटर </td><td> थर्मो वैज्ञानिक </td><td> 2538 </td></tr><tr><td> Agilent है 2100 Bioanalyzer </td><td> G2943CA </td><td></td></tr></tbody></table>

microrna detection in prostate tumors by quantitative real-time pcr (qpcr)

MicroRNAs (miRNAs) are single-stranded, 18&#x2013;24 nucleotide long, non-coding RNA molecules. They are involved in virtually every cellular process including development1, apoptosis2, and cell cycle regulation3. MiRNAs are estimated to regulate the expression of 30% to 90% of human genes4 by binding to their target messenger RNAs (mRNAs)5. Widespread dysregulation of miRNAs has been reported in various diseases and cancer subtypes6. Due to their prevalence and unique structure, these small molecules are likely to be the next generation of biomarkers, therapeutic agents and/or targets.
Methods used to investigate miRNA expression include SYBR green I dye- based as well as Taqman-probe based qPCR. If miRNAs are to be effectively used in the clinical setting, it is imperative that their detection in fresh and/or archived clinical samples be accurate, reproducible, and specific. qPCR has been widely used for validating expression of miRNAs in whole genome analyses such as microarray studies7. The samples used in this protocol were from patients who underwent radical prostatectomy for clinically localized prostate cancer; however other tissues and cell lines can be substituted in. Prostate specimens were snap-frozen in liquid nitrogen after resection. Clinical variables and follow-up information for each patient were collected for subsequent analysis8.
Quantification of miRNA levels in prostate tumor samples. The main steps in qPCR analysis of tumors are: Total RNA extraction, cDNA synthesis, and detection of qPCR products using miRNA-specific primers. Total RNA, which includes mRNA, miRNA, and other small RNAs were extracted from specimens using TRIzol reagent. Qiagen's miScript System was used to synthesize cDNA and perform qPCR (Figure 1). Endogenous miRNAs are not polyadenylated, therefore during the reverse transcription process, a poly(A) polymerase polyadenylates the miRNA. The miRNA is used as a template to synthesize cDNA using oligo-dT and Reverse Transcriptase. A universal tag sequence on the 5' end of oligo-dT primers facilitates the amplification of cDNA in the PCR step. PCR product amplification is detected by the level of fluorescence emitted by SYBR Green, a dye which intercalates into double stranded DNA. Specific miRNA primers, along with a Universal Primer that binds to the universal tag sequence will amplify specific miRNA sequences. 
The miScript Primer Assays are available for over a thousand human-specific miRNAs, and hundreds of murine-specific miRNAs. Relative quantification method was used here to quantify the expression of miRNAs. To correct for variability amongst different samples, expression levels of a target miRNA is normalized to the expression levels of a reference gene. The choice of a gene on which to normalize the expression of targets is critical in relative quantification method of analysis. Examples of reference genes typically used in this capacity are the small RNAs RNU6B, RNU44, and RNU48 as they are considered to be stably expressed across most samples. In this protocol, RNU6B is used as the reference gene.

Watch this Scientific Journal Video about MicroRNA Detection in Prostate Tumors by Quantitative Real-time PCR qPCR at JoVE.com

MicroRNA Detection in Prostate Tumors by Quantitative Real-time PCR qPCR

मात्रात्मक वास्तविक समय पोलीमरेज़ चेन रिएक्शन (qPCR) एक तेजी से और संवेदनशील ट्यूमर के नमूनों में विभिन्न microRNA की अभिव्यक्ति के स्तर (miRNA) अणुओं की जांच के विधि है. अलग miRNA अणुओं के सैकड़ों की इस विधि अभिव्यक्ति का उपयोग करना, प्रवर्धित किया जा सकता है मात्रा, और एक ही सीडीएनए टेम्पलेट से विश्लेषण किया है.

MicroRNA प्रोस्टेट ट्यूमर में मात्रात्मक वास्तविक समय पीसीआर (qPCR) द्वारा जांच

MicroRNAs (miRNAs) are single-stranded, 18&#x2013;24 nucleotide long, non-coding RNA molecules. They are involved in virtually every cellular process ...

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MicroRNA Detection in Prostate Tumors by Quantitative Real-time PCR (qPCR)

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