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Coxiella burnetii: A Pathogenic Intracellular Acidophile

Edward I Shaw1, Daniel E Voth2

  • 11​Department of Microbiology and Molecular Genetics, Oklahoma State University, Stillwater, OK, 74078, USA.

Microbiology (Reading, England)
|November 14, 2018
PubMed

Insights

Coxiella burnetii causes Q fever by infecting host cells. Understanding its Type 4B Secretion System and effector proteins is key to combating this worldwide pathogen.

Area of Science:

  • Microbiology
  • Infectious Diseases
  • Cell Biology

Background:

  • Coxiella burnetii is an obligate intracellular pathogen responsible for Q fever.
  • It resides within a phagolysosome-like vacuole in host cells.
  • The pathogen is globally distributed and maintained through chronic infections in ruminants.

Purpose of the Study:

  • To elucidate the mechanisms by which C. burnetii infects and manipulates host alveolar macrophages.
  • To investigate the role of the bacterial Type 4B Secretion System and its effectors in pathogenesis.
  • To highlight how advancements in culture and genetics are improving understanding of C. burnetii.

Main Methods:

  • Utilizing genetic systems to study C. burnetii.
  • Employing axenic culture techniques.
  • Investigating bacterial Type 4B Secretion System and effector proteins.

Main Results:

  • C. burnetii employs a Type 4B Secretion System for host cell usurpation.
  • Specific effector proteins are secreted to manipulate host cells.
  • New insights into pathogen physiology are emerging from advanced culture and genetic studies.

Conclusions:

  • C. burnetii pathogenesis involves sophisticated molecular strategies for host cell invasion and survival.
  • Further research into its secretion system and effectors is crucial for developing interventions.
  • Advances in experimental systems are accelerating the understanding of Q fever.
Keywords:
ACCMCoxiellaIntracellular pathogenesisQ-feverType 4B Secretion System

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