EPEC and cell-surface nucleolin
Author Information
Author(s): Dean Paul, Kenny Brendan
Primary Institution: Institute for Cell and Molecular Biosciences, Medical School, University of Newcastle
Hypothesis
How does EPEC interact with cell-surface nucleolin during infection?
Conclusion
EPEC recruits and sequesters cell-surface nucleolin into bacterial microcolonies during infection, which may play a role in disrupting epithelial barrier function.
Supporting Evidence
- EPEC causes a rapid loss of transepithelial electrical resistance (TER) on Caco-2 cells.
- Nucleolin was found to be sequestered around individual bacteria within microcolonies.
- Midkine and pleiotrophin exposure significantly attenuated EPEC's ability to disrupt TER.
Takeaway
When EPEC bacteria infect cells, they pull a protein called nucleolin from the cell surface into their clusters, which might help them cause disease.
Methodology
Caco-2 cells were infected with EPEC and analyzed using confocal microscopy to observe nucleolin recruitment.
Potential Biases
Potential bias in the detection methods for cell-surface nucleolin may affect results.
Limitations
The study primarily used a single cell line (Caco-2) and may not fully represent other cell types.
Participant Demographics
Caco-2 cells, a human intestinal epithelial cell line.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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