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SELECTBIO Conferences Advances in Biodetection & Biosensors

Advances in Biodetection & Biosensors Workshop

Improved cDNA Library Generation for Transcriptome Analysis from a Single Cell Workshop

10 Mar 2014 in Berlin, Germany, 13:00 - 13:45

RNA-Sequencing (RNA-Seq) has revolutionized gene expression analysis even from single cells. It allows quantitative analysis of the whole transcriptome, to determine 5' and 3' ends of genes and map exon/intron boundaries. RNA-Sequencing requires reverse transcription of RNA into cDNA, the resulting cDNA can be analyzed by Next Generation Sequencing.

One powerful method for cDNA preparation is SMART™ technology (Switching Mechanism At the 5' end of the RNA Template), which utilizes the template switching activity of reverse transcriptase to enable the direct addition of a PCR adapter to the 3' end of the first-strand cDNA. The result is a single-tube protocol that enhances library amplification efficiency while minimizing the chance for contamination, making it ideal for library preparation from small amounts of starting material. Indeed, the SMARTer® Ultra™ Low RNA method allows researchers to readily obtain high quality data from a single cell or 10 pg of total RNA – the approximate amount of total RNA in a single cell.  

An improved SMART protocol has been developed that is simpler and faster without compromising the quality or yield of cDNA produced.  The full-length cDNA produced with this method is used as a template in library sample preparation for next generation sequencing platforms. Sequencing results for libraries created from single cells or from total RNA inputs equivalent to a single cell demonstrate that approximately 90% of the reads map to reference sequences, less than 0.5% of the total reads map to ribosomal RNA, and the average transcript coverage is uniform. Eliminating a purification step after first strand synthesis and changing the polymerase result in higher sensitivity overall with improved representation from GC-rich genes.  These data indicate that the improved SMART cDNA protocol is an ideal choice for single cell transcriptome analysis.


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Add to Calendar ▼2014-03-10 00:00:002014-03-11 00:00:00Europe/LondonAdvances in Biodetection and BiosensorsAdvances in Biodetection and Biosensors in Berlin, GermanyBerlin,