Modeling the Effects of Staphylococcal Enterotoxin B on Apoptosis
Author Information
Author(s): Brandon W Higgs, John Dileo, Wenling E Chang, Haley B Smith, Olivia J Peters, Rasha Hammamieh, Marti Jett, Jordan C Feidler
Primary Institution: The MITRE Corporation
Hypothesis
How does Staphylococcal Enterotoxin B (SEB) affect the apoptosis pathway?
Conclusion
The study reveals that SEB exposure accelerates apoptosis by altering the expression of key proteins in the Fas-mediated apoptotic pathway.
Supporting Evidence
- Cells exposed to SEB showed an increase in executioner caspase expression.
- SEB exposure led to a faster rate of apoptosis compared to normal conditions.
- Three proteins (procaspase-8, caspase-3, and xIAP) showed significant differences between normal and SEB-exposed conditions.
Takeaway
This study shows that a toxin from bacteria can make cells die faster by changing how they normally die.
Methodology
The study used modeling and simulation of the Fas-mediated apoptotic pathway, along with experiments on human Jurkat cells stimulated with an anti-Fas antibody in the presence and absence of SEB.
Participant Demographics
Human Jurkat cells were used in the experiments.
Statistical Information
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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