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Annexin II is a novel receptor for Pseudomonas aeruginosa

Susanne Kirschnek1, Constantin Adams, Erich Gulbins

  • 1Department of Medical Microbiology, Technical University Munich, 81675 Munich, Germany.

Biochemical and Biophysical Research Communications
|January 15, 2005
PubMed

Insights

Pseudomonas aeruginosa infections are a major concern. Researchers identified annexin II as a novel receptor crucial for P. aeruginosa entry into human cells, offering potential therapeutic targets.

Area of Science:

  • Microbiology
  • Cell Biology
  • Immunology

Background:

  • Pseudomonas aeruginosa (P. aeruginosa) infections pose significant threats, particularly in ventilated, poly-traumatized, and cystic fibrosis patients.
  • Chronic pulmonary infections caused by P. aeruginosa necessitate understanding its invasion mechanisms.
  • Identifying host cell receptors for P. aeruginosa is critical for developing targeted interventions.

Purpose of the Study:

  • To identify novel host cell receptors involved in the internalization of P. aeruginosa into mammalian epithelial cells.
  • To elucidate the role of specific molecular interactions in P. aeruginosa pathogenesis.

Main Methods:

  • Purification of bacterial components using SDS-PAGE.
  • Identification of binding proteins via mass spectrometry.
  • Functional assays to assess bacterial internalization inhibition.

Main Results:

  • Annexin II was identified as a specific binding partner for P. aeruginosa.
  • Recombinant annexin II blocked the internalization of P. aeruginosa into human epithelial cells.
  • This suggests annexin II plays a key role in P. aeruginosa host cell entry.

Conclusions:

  • Annexin II is a novel receptor mediating P. aeruginosa entry into epithelial cells.
  • Targeting the annexin II-P. aeruginosa interaction could be a therapeutic strategy.
  • Further research into this interaction may yield new treatments for P. aeruginosa infections.

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