Gene Expression Changes in Burkholderia cenocepacia During Growth in Cystic Fibrosis Sputum
Author Information
Author(s): Drevinek Pavel, Holden Matthew TG, Ge Zhaoping, Jones Andrew M, Ketchell Ian, Gill Ryan T, Mahenthiralingam Eshwar
Primary Institution: Cardiff School of Biosciences, Cardiff University, Cardiff, UK
Hypothesis
What gene expression changes occur in Burkholderia cenocepacia when grown in cystic fibrosis sputum?
Conclusion
Burkholderia cenocepacia alters the expression of over 10% of its genes when growing in cystic fibrosis sputum, revealing novel pathways related to antimicrobial resistance and oxidative stress.
Supporting Evidence
- A total of 723 coding sequences were significantly altered, with 287 upregulated and 436 downregulated.
- Microarray data showed that 182 genetic features were significantly over-expressed while 296 were down-regulated.
- Validation of microarray results was performed using quantitative PCR on five selected genes.
Takeaway
The bacteria Burkholderia cenocepacia changes how it behaves when it grows in the mucus of people with cystic fibrosis, which helps it survive and cause infections.
Methodology
A custom microarray was used to analyze gene expression in Burkholderia cenocepacia grown in cystic fibrosis sputum samples.
Potential Biases
Potential bias due to the limited number of patient samples and specific strain used.
Limitations
The study focused on a specific strain of Burkholderia cenocepacia and may not represent all strains or conditions.
Participant Demographics
Sputum samples were obtained from six cystic fibrosis patients, with varying clinical statuses.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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