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RNA-based control mechanisms of Clostridium difficile.

Olga Soutourina1

  • 1Laboratoire Pathogenèse des Bactéries Anaérobies, Institut Pasteur, 25 rue du Dr Roux, 75724 Paris Cedex 15, France; Université Paris Diderot, Sorbonne Paris Cité, Cellule Pasteur, 25 rue du Dr Roux, 75724 Paris Cedex 15, France; Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette cedex, France.

Current Opinion in Microbiology
|February 20, 2017
PubMed
Summary

Regulatory RNAs control gene expression in Clostridium difficile (CD), a major cause of hospital-acquired diarrhea. Understanding these RNA networks offers new insights into CD pathogenicity and potential therapeutic targets.

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Area of Science:

  • Microbiology
  • Genetics
  • Molecular Biology

Background:

  • Clostridium difficile (CD)-associated diarrhea is a leading cause of hospital-acquired infections globally.
  • The intricate mechanisms underlying CD pathogenicity are not fully understood.
  • Emerging evidence highlights the critical role of RNA networks in regulating gene expression within CD.

Purpose of the Study:

  • To review recent advancements in understanding RNA-based regulatory mechanisms in Clostridium difficile.
  • To explore the diverse types and functions of regulatory RNAs identified in CD.
  • To discuss the implications of this knowledge for future research and therapeutic strategies.

Main Methods:

  • Deep sequencing techniques to identify novel regulatory RNAs.
  • Targeted approaches for characterizing specific RNA classes, including Hfq-dependent riboregulators, cis-antisense RNAs, CRISPR RNAs, and riboswitches.
  • Analysis of the functional roles of these RNAs in key CD infection processes.

Main Results:

  • Over 200 regulatory RNAs have been identified in CD.
  • These RNAs, including riboregulators, cis-antisense RNAs, CRISPR RNAs, and riboswitches, are involved in critical processes.
  • Key CD infection processes regulated by RNAs include motility, biofilm formation, adhesion, sporulation, stress response, and phage defense.

Conclusions:

  • Regulatory RNAs play a fundamental role in controlling gene expression and infection cycle processes in Clostridium difficile.
  • The identified RNA network represents a significant layer of gene regulation in this important enteropathogen.
  • Further investigation into these RNA-based mechanisms holds promise for novel discoveries and therapeutic interventions against CD.