Iron Availability Affects the Metabolism of the Pathogenic Fungus Paracoccidioides brasiliensis
Author Information
Author(s): Parente Ana F. A., Bailão Alexandre M., Borges Clayton L., Parente Juliana A., Magalhães Adriana D., Ricart Carlos A. O., Soares Célia M. A.
Primary Institution: Universidade Federal de Goiás
Hypothesis
How does iron availability influence the metabolic status of Paracoccidioides brasiliensis?
Conclusion
The study found that iron limitation leads to a metabolic shift in Paracoccidioides brasiliensis, favoring iron-independent pathways.
Supporting Evidence
- Iron availability increases the susceptibility of mice to P. brasiliensis infection.
- A total of 274 proteins were found to change significantly in abundance due to iron depletion.
- Proteins involved in glycolysis were upregulated while those in the TCA cycle were downregulated under iron-limiting conditions.
- Gene expression analysis confirmed the activation of iron uptake systems in response to iron deprivation.
Takeaway
When there's not enough iron, the fungus Paracoccidioides brasiliensis changes how it gets energy, using different methods that don't need iron.
Methodology
The study used 2D gel electrophoresis and mass spectrometry to analyze protein expression in P. brasiliensis under different iron conditions.
Limitations
The study primarily focused on protein expression without exploring the long-term effects of iron deprivation on fungal viability.
Participant Demographics
BALB/c mice were used for infection studies.
Statistical Information
Statistical Significance
p≤0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website