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Microbial invasion: a covert activity?

G L Gorby1, E N Robinson, L R Barley

  • 1Center for Infectious Diseases, Diagnostic Microbiology and Immunology, University of Utah School of Medicine, Salt Lake City 84132.

Canadian Journal of Microbiology
|April 1, 1988
PubMed
Summary
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Pathogenic microbes invade host tissues using parasite-directed endocytosis, a process where they induce their own entry. Some pathogens may mimic host molecules to enter cells covertly.

Area of Science:

  • Microbiology
  • Cell Biology
  • Pathogenesis

Background:

  • Nonpathogenic microbes form biofilms on surfaces.
  • Pathogenic microbes can invade host tissues by inducing endocytosis.
  • This invasion occurs across various epithelial and endothelial barriers.

Purpose of the Study:

  • To explore the phenomenon of parasite-directed endocytosis.
  • To understand the mechanisms and molecular basis of microbial invasion.
  • To investigate the hypothesis of biologic mimicry in pathogen entry.

Main Methods:

  • Observational studies of microbial invasion across different cell types.
  • Analysis of known invasion mechanisms (e.g., Yersinia, Shigella).
  • Hypothetical modeling based on similarities to receptor-mediated endocytosis.

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Main Results:

  • Parasite-directed endocytosis is observed in various pathogens and cell types.
  • Invasion mechanisms can involve single or multiple factors.
  • The molecular mechanisms for many pathogens remain poorly understood.

Conclusions:

  • Parasite-directed endocytosis is a key virulence strategy for many pathogens.
  • Biologic mimicry, where pathogens resemble host ligands, is a plausible invasion mechanism.
  • Further research is needed to elucidate the specific molecular mechanisms involved.