Journal
MICROORGANISMS
Volume 7, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/microorganisms7120707
Keywords
Pseudomonas aeruginosa; ExoU; type 3 secretion system; inhibitor; non-antibiotic antimicrobials
Categories
Funding
- Fight for Sight (FFS) research charity
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The opportunistic pathogen Pseudomonas aeruginosa employs the type III secretion system (T3SS) and four effector proteins, ExoS, ExoT, ExoU, and ExoY, to disrupt cellular physiology and subvert the host's innate immune response. Of the effector proteins delivered by the T3SS, ExoU is the most toxic. In P. aeruginosa infections, where the ExoU gene is expressed, disease severity is increased with poorer prognoses. This is considered to be due to the rapid and irreversible damage exerted by the phospholipase activity of ExoU, which cannot be halted before conventional antibiotics can successfully eliminate the pathogen. This review will discuss what is currently known about ExoU and explore its potential as a therapeutic target, highlighting some of the small molecule ExoU inhibitors that have been discovered from screening approaches.
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