The role of acid stress in Salmonella pathogenesis

Research output: Contribution to journalReview article

4 Citations (Scopus)

Abstract

After uptake by epithelial cells or engulfment by macrophages, Salmonella resides in an acidic vacuole. Salmonella senses this acidic compartment through the action of the EnvZ/OmpR two-component regulatory system. OmpR, in turn, represses the cadC/BA system, preventing neutralization of the bacterial cytoplasm. New, single cell techniques now enable us to observe that in response to acid stress, the pH is low in bacterial cells and acidification is critical for infection. Instead of recovering from acid stress, Salmonella uses acid pH as a signal to drive pathogenesis. The relevant molecular mechanisms employed by Salmonella to couple acid stress with the expression of virulence genes that promote intracellular survival are explored.

Original languageEnglish (US)
Pages (from-to)45-51
Number of pages7
JournalCurrent Opinion in Microbiology
Volume47
DOIs
StatePublished - Feb 1 2019
Externally publishedYes

Fingerprint

Salmonella
Acids
Vacuoles
Virulence
Cytoplasm
Epithelial Cells
Macrophages
Gene Expression
Infection

ASJC Scopus subject areas

  • Microbiology
  • Microbiology (medical)
  • Infectious Diseases

Cite this

The role of acid stress in Salmonella pathogenesis. / Kenney, Linda.

In: Current Opinion in Microbiology, Vol. 47, 01.02.2019, p. 45-51.

Research output: Contribution to journalReview article

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