Adherence to and invasion of tissue culture cells by Vibrio hollisae
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M D Miliotis1, B D Tall, R T Gray
1Division of Virulence Assessment, U.S. Food and Drug Administration, Washington, D.C. 20204, USA.
Abstract:
The adherence to and invasion of cultured epithelial cells by Vibrio hollisae were examined by quantitative studies and by light, fluorescent, and electron microscopy. Condensed actin was observed around clustered adherent and intracellular bacteria. Bacteria multiplied intracellularly. Inhibitor studies indicated that internalization occurred by an integrated pleiotropic process involving eukaryotic and prokaryotic protein syntheses, microfilaments, microtubules, and receptor-mediated endocytosis.
Insights
Vibrio hollisae invades epithelial cells, multiplying within them. This invasion process involves actin, cellular structures, and receptor-mediated endocytosis, highlighting bacterial pathogenesis mechanisms.
Area of Science:
- Microbiology
- Cell Biology
- Bacterial Pathogenesis
Background:
- Vibrio hollisae is a bacterial species with implications for human health.
- Understanding bacterial invasion mechanisms is crucial for developing effective treatments.
Purpose of the Study:
- To investigate the adherence and invasion of cultured epithelial cells by Vibrio hollisae.
- To elucidate the cellular processes involved in Vibrio hollisae internalization and intracellular multiplication.
Main Methods:
- Quantitative studies to assess bacterial adherence and invasion.
- Microscopy techniques including light, fluorescent, and electron microscopy.
- Inhibitor studies to determine the cellular pathways involved.
Main Results:
- Condensed actin was observed around adherent and intracellular Vibrio hollisae.
- Vibrio hollisae demonstrated intracellular multiplication within epithelial cells.
- Internalization was identified as a complex process involving protein synthesis, cytoskeletal elements (microfilaments, microtubules), and receptor-mediated endocytosis.
Conclusions:
- Vibrio hollisae actively invades and replicates within epithelial cells.
- The invasion mechanism is multifaceted, engaging host cell machinery.
- These findings provide insights into the pathogenesis of Vibrio hollisae infections.