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ppGpp conjures bacterial virulence

Zachary D Dalebroux1, Sarah L Svensson, Erin C Gaynor

  • 1Department of Microbiology and Immunology, University of Michigan Medical School, 6733 Medical Science Building II, 1150 West Medical Center Drive, Ann Arbor, MI 48109-5620, USA

Microbiology and Molecular Biology Reviews : MMBR
|May 29, 2010
PubMed

Insights

Pathogenic bacteria use stringent response pathways, involving nucleotide alarmones, to coordinate survival and virulence. This response helps them overcome host defenses and replicate effectively.

Area of Science:

  • Microbiology
  • Bacterial Pathogenesis
  • Molecular Biology

Background:

  • Pathogens must survive host defenses and replicate.
  • Virulence factors like attachment, invasion, and transmission are crucial for pathogens.
  • Pathogens integrate virulence with general adaptations, such as stress resistance, via signaling networks.

Purpose of the Study:

  • To explore the role of the stringent response in bacterial virulence.
  • To understand how nucleotide alarmones coordinate survival and virulence programs in pathogens.

Main Methods:

  • Review of existing literature on bacterial stringent response and virulence.
  • Analysis of regulatory mechanisms linking stringent response components to virulence pathways.
  • Examination of diverse pathogenic bacteria utilizing these pathways.

Main Results:

  • The stringent response, regulated by nucleotide alarmones, is a key factor in bacterial virulence.
  • Components of the stringent response are integrated with global signaling networks in many pathogens.
  • This response aids pathogens in coordinating survival and virulence programs to overcome host defenses.

Conclusions:

  • The stringent response is a conserved mechanism contributing significantly to the virulence of a wide range of pathogenic bacteria.
  • Understanding these pathways offers insights into novel antimicrobial strategies targeting bacterial survival and pathogenesis.

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