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Related Experiment Videos

Interactions between enteropathogenic Escherichia coli and host epithelial cells

M S Donnenberg1, J B Kaper, B B Finlay

  • 1Divn of Infectious Diseases, University of Maryland School of Medicine, Baltimore 21201, USA. mdonnenb@umabnet.ab.umd.edu

Trends in Microbiology
|March 1, 1997
PubMed
Summary

Enteropathogenic Escherichia coli (EPEC) uses type IV fimbriae and a type III secretion system to adhere to host cells. This interaction involves bacteria-induced signal transduction activating host cell receptors for tenacious bacterial attachment.

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Area of Science:

  • Microbiology
  • Cell Biology
  • Infectious Diseases

Background:

  • Enteropathogenic Escherichia coli (EPEC) infection involves complex microorganism-host cell interactions.
  • Type IV fimbriae and type III secretion systems are key virulence factors in EPEC pathogenesis.

Purpose of the Study:

  • To elucidate the multistage process of EPEC pathogenesis.
  • To understand the molecular mechanisms of bacterial adherence to host cells.

Main Methods:

  • Investigated the roles of type IV fimbriae and type III secretion apparatus in EPEC-host cell interactions.
  • Analyzed bacteria-induced signal transduction pathways.

Main Results:

  • Type IV fimbriae and type III secretion apparatus are crucial for EPEC adherence.

Related Experiment Videos

  • Bacteria-induced signal transduction activates host cell receptors.
  • This activation facilitates tenacious bacterial attachment to the host cell surface.

    • Conclusions:

    • EPEC pathogenesis serves as a model for studying microorganism-host cell dynamics.
    • Bacterial adherence is a regulated process involving host cell receptor activation.