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Updated: May 29, 2026
08:34
MS2-Affinity Purification Coupled with RNA Sequencing in Gram-Positive Bacteria
Published on: February 23, 2021
Duplex-specific nuclease efficiently removes rRNA for prokaryotic RNA-seq
Hana Yi1, Yong-Joon Cho, Sungho Won
1Institute of Molecular Biology and Genetics, School of Biological Sciences & Institute of Bioinformatics (BIOMAX), Seoul National University, Seoul, Republic of Korea.
Nucleic Acids Research
|September 2, 2011
Summary
Duplex-specific nuclease (DSN) effectively removes ribosomal RNA (rRNA) from bacterial RNA samples for transcriptomics. This method is superior to subtractive hybridization, preserving essential messenger RNA (mRNA) abundance for accurate sequencing.
Area of Science:
- Molecular Biology
- Genomics
- Bacterial Transcriptomics
Background:
- Next-generation sequencing (NGS) offers significant potential for bacterial transcriptomics.
- Ribosomal RNA (rRNA) constitutes a major fraction of total RNA, necessitating its removal for accurate messenger RNA (mRNA) analysis.
- Conventional rRNA removal methods, such as subtractive hybridization (Hyb), can be inefficient and may alter mRNA profiles.
Purpose of the Study:
- To evaluate the efficacy of Duplex-Specific Nuclease (DSN) for depleting rRNA from prokaryotic total RNA.
- To compare the performance of DSN treatment against the conventional subtractive hybridization (Hyb) method for bacterial transcriptomics.
- To assess the impact of DSN treatment on the relative abundance of mRNA species in bacterial samples.
Main Methods:
- Total RNA was isolated from Escherichia coli grown under four different conditions.
- DSN treatment was applied to degrade rRNA, followed by library preparation for Illumina deep sequencing.
- A parallel experiment using subtractive hybridization (Hyb) was conducted for comparison.
Main Results:
- DSN treatment demonstrated significantly higher efficiency in removing rRNA compared to the Hyb method.
- DSN treatment effectively preserved the original relative abundance of mRNA species.
- Deep sequencing of transcriptomes revealed a more comprehensive mRNA profile using DSN compared to Hyb.
Conclusions:
- DSN treatment is a highly effective method for rRNA removal in bacterial mRNA sequencing (mRNA-seq) experiments.
- DSN offers superior performance over Hyb-based methods, ensuring accurate representation of the bacterial transcriptome.
- DSN treatment is recommended as a preferred method for bacterial mRNA-seq to enhance data quality and reliability.
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