Bacterial Infections and Mycoses Commons^™

Pseudomonas Aeruginosa-Induced Bleb-Niche Formation In Epithelial Cells Is Independent Of Actinomyosin Contraction And Enhanced By Loss Of Cystic Fibrosis Transmembrane-Conductance Regulator Osmoregulatory Function, Amber L. Jolly, Desire Takawira, Olufolarin O. Oke, Sarah A. Whiteside, Stephanie W. Chang, Emily R. Wen, David J. Evans

Faculty Publications & Research of the TUC College of Pharmacy

The opportunistic pathogen Pseudomonas aeruginosa can infect almost any site in the body but most often targets epithelial cell-lined tissues such as the airways, skin, and the cornea of the eye. A common predisposing factor is cystic fibrosis (CF), caused by defects in the cystic fibrosis transmembrane-conductance regulator (CFTR). Previously, we showed that when P. aeruginosa enters epithelial cells it replicates intracellularly and occupies plasma membrane blebs. This phenotype is dependent on the type 3 secretion system (T3SS) effector ExoS, shown by others to induce host cell apoptosis. Here, we examined mechanisms for P. aeruginosa-induced bleb formation, focusing on its …