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Transcriptomic Approaches for Studying Quorum Sensing in Vibrio cholerae.

Roman Herzog1, Kai Papenfort2

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Methods in Enzymology
|December 4, 2018
PubMed
Summary

RNA-sequencing (RNA-seq) identified new small regulatory RNAs (sRNAs) in Vibrio cholerae. These sRNAs regulate quorum sensing and biofilm formation by targeting mRNAs post-transcriptionally.

Keywords:
HfqQuorum sensingRNA-sequencingVibrio choleraesRNAs

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Area of Science:

  • Microbiology
  • Genomics
  • Molecular Biology

Background:

  • RNA-sequencing (RNA-seq) is the standard for transcriptome analysis.
  • RNA-seq has enabled the discovery of novel RNA classes, including small regulatory RNAs (sRNAs).
  • Vibrio cholerae, a major human pathogen, utilizes quorum sensing (QS) for pathogenicity and biofilm formation.

Purpose of the Study:

  • To describe the application of RNA-seq for discovering and characterizing regulatory RNAs in Vibrio cholerae.
  • To discuss the role of these regulatory RNAs in quorum sensing and biofilm formation.
  • To outline methods for identifying and validating sRNA target genes.

Main Methods:

  • RNA-sequencing (RNA-seq) for transcriptome analysis.
  • Bioinformatic approaches for sRNA discovery and characterization.
  • Experimental validation of sRNA targets and functions.

Main Results:

  • Dozens of novel sRNAs were identified in Vibrio cholerae using RNA-seq.
  • Several identified sRNAs were found to be involved in quorum sensing (QS).
  • These sRNAs regulate gene expression post-transcriptionally by base-pairing with target mRNAs.

Conclusions:

  • RNA-seq is a powerful tool for discovering regulatory RNAs in pathogens like Vibrio cholerae.
  • Regulatory RNAs play a significant role in V. cholerae's collective functions, including QS and biofilm formation.
  • Identifying sRNA targets is crucial for understanding their physiological roles and developing new therapeutic strategies.