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Old 03-25-2011, 02:00 AM   #1
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Default RNA-Seq: Ribosomal RNA Depletion for Massively Parallel Bacterial RNA-Sequencing Appl

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Ribosomal RNA Depletion for Massively Parallel Bacterial RNA-Sequencing Applications.

Methods Mol Biol. 2011;733:93-103

Authors: Chen Z, Duan X

RNA-sequencing (RNA-Seq) is a digital display of a transcriptome using next-generation sequencing technologies and provides detailed, high-throughput view of the transcriptome. The first step in RNA-Seq is to isolate whole transcriptome from total RNA. Since large ribosomal RNA (rRNA) constitutes approximately 90% RNA species in total RNA, whole transcriptome analysis without any contamination from rRNA is very difficult using existing RNA isolation methods. RiboMinus(™) purification method provides a novel and efficient method to isolate RNA molecules of the transcriptome devoid of large rRNA from total RNA for transcriptome analysis. It allows for whole transcriptome isolation through selective depletion of abundant rRNA molecules from total RNA. The rRNA depleted RNA fraction is termed as RiboMinus(™) RNA fraction, which is enriched in polyadenylated RNA, nonpolyadenylated RNA, preprocessed RNA, tRNA, numerous regulatory RNA molecules, and other RNA transcripts of yet unknown function. Using RiboMinus(™) method to isolate RiboMinus RNA results in up to 99.0% removal of 16S and 23S rRNA molecules from 0.5 to 10 ?g total bacterial RNA based on Bioanalyzer analysis. It enables efficient whole transcriptome sequencing analysis without major contamination from highly abundant rRNA. Residual rRNA accounts for less than 10% of entire transcriptome based on both SOLiD and Genome Analyzer RNA-Seq data.

PMID: 21431765 [PubMed - in process]

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