Genes in Aspergillus fumigatus Responding to Human Neutrophils
Author Information
Author(s): Sugui Janyce A., Kim H. Stanley, Zarember Kol A., Chang Yun C., Gallin John I., Nierman Willian C., Kwon-Chung Kyung J.
Primary Institution: National Institute of Allergy and Infectious Diseases, National Institutes of Health
Hypothesis
What genes are differentially expressed in Aspergillus fumigatus conidia and hyphae when exposed to human neutrophils?
Conclusion
The study identifies genes in Aspergillus fumigatus that are involved in its response to human neutrophils, suggesting a complex interaction that may influence infection outcomes.
Supporting Evidence
- 244 genes were up-regulated in conidia but not in hyphae upon exposure to neutrophils.
- Genes involved in fatty acid degradation and peroxisome function were among those up-regulated.
- Deletants of differentially expressed genes showed phenotypes related to their proposed functions.
Takeaway
When Aspergillus fumigatus is attacked by human immune cells called neutrophils, it changes the way it uses food to survive, which might help it cause infections.
Methodology
The study used genome-wide microarray analysis to assess gene expression in Aspergillus fumigatus conidia and hyphae exposed to neutrophils from healthy individuals and patients with chronic granulomatous disease.
Limitations
The study did not assess the in vivo relevance of the identified genes in terms of their role in infection.
Participant Demographics
Neutrophils were obtained from healthy donors and patients with chronic granulomatous disease.
Digital Object Identifier (DOI)
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