SRA

Pseudomonas aeruginosa and Staphylococcus aureus are often co-isolated in persistent infections. The goal of this study was to determine how secreted products from S. aureus affect gene expression in P. aeruginosa. Therefore, media control or S. aureus supernatant was added to P. aeruginosa cultures at 25% total volume and gene expression was measured at 20 min, 1 h, and 2 h using RNA-seq. Overall, after addition of S. aureus supernatant, there was an upregulation in genes involved in metal deprivation and intermediate metabolite uptake. Overall design: We prepared RNA-seq samples from P. aeruginosa cultures at the time of treatment, and 20 minutes, 1 hour, and 2 hours after the addition of 25% (v/v) media control or S. aureus supernatant. RNAprotect (Qiagen) was added to each sample before purification using the Total RNA Purification Plus Kit (Norgen). Genomic DNA was removed using Turbo DNase (Invitrogen) and rRNA was removed using Ribo-Zero (Epicentre). The cDNA libraries were generated using NEBNext Ultra II Directional Library Kit and amplified with NEBNext index primers (New England Biolabs). Sequencing was performed at the National Cancer Institute Center for Cancer Research Genomics Core.