Project description:Pseudomonas aeruginosa can establish lifelong chronic airway infections in cystic fibrosis (CF) patients. However, the genetic features associated with long-term persistence in the lung are not understood. We sequenced the genome of P. aeruginosa strain RP73, which was isolated after 16.9 years of chronic lung infection in a CF patient.
Project description:Pseudomonas aeruginosa is a threatening, opportunistic pathogen causing disease in immunocompromised individuals. The hallmark of P. aeruginosa virulence is its multi-factorial and combinatorial nature. It renders such bacteria infectious for many organisms and it is often resistant to antibiotics. To gain insights into the physiology of P. aeruginosa during infection, we assessed the transcriptional programs of three different P. aeruginosa strains directly after isolation from burn wounds of humans. We compared the programs to those of the same strains using two infection models: a plant model, which consisted of the infection of the midrib of lettuce leaves, and a murine tumor model, which was obtained by infection of mice with an induced tumor in the abdomen. All control conditions of P. aeruginosa cells growing in suspension and as a biofilm were added to the analysis. We found that these different P. aeruginosa strains express a pool of distinct genetic traits that are activated under particular infection conditions regardless of their genetic variability. The knowledge herein generated will advance our understanding of P. aeruginosa virulence and provide valuable cues for the definition of prospective targets to develop novel intervention strategies.
Project description:Pseudomonas aeruginosa strain 18A is a clinical, nonclonal isolate retrieved from the sputum of a chronically infected cystic fibrosis patient. The genome of 18A was sequenced for comparison with environmental and clinical isolates to identify genes that might facilitate its persistence during infection.
| S-EPMC3622990 | biostudies-other
Project description:Phages against multi drug resistant bacteria
Project description:Pseudomonas aeruginosa is an important opportunistic pathogen associated with chronic pulmonary infections and mortality in cystic fibrosis (CF) patients. Here, we present the complete genome sequence of stable mucoid P. aeruginosa strain DK1-NH57388A, a CF isolate which has previously been used to establish chronic lung infections in an animal model.
Project description:A shaving proteomic approach was applied to explore surface protein expression of multi- and pan-drug resistant strains of Pseudomonas aeruginosa isolated from the airways of cystic fibrosis patients with long-term chronic colonization compared to wild-type antibiotic-sensitive strains isolated from patients with recent infection.