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- W2905949314 abstract "Pseudomonas aeruginosa is a versatile Gram-negative pathogen with intricate intracellular regulatory networks that enable it to adapt to and flourish in a variety of biotic and abiotic habitats. However, the mechanism permitting the persistent survival of P. aeruginosa within host tissues and causing chronic symptoms still remains largely elusive. By using in situ RNA sequencing, here we show that P. aeruginosa adopts different metabolic pathways and virulence repertoires to dominate the progression of acute and chronic lung infections. Notably, a virulence factor named TesG, which is controlled by the vital quorum-sensing system and secreted by the downstream type I secretion system, can suppress the host inflammatory response and facilitate the development of chronic lung infection. Mechanically, TesG can enter the intracellular compartment of macrophages through clathrin-mediated endocytosis, competitively inhibit the activity of eukaryotic small GTPase and thus suppress subsequent neutrophil influx, cell cytoskeletal rearrangement of macrophages and the secretion of cytokines and chemokines. Therefore, the identification of TesG in this study reveals a type I secretion apparatus of P. aeruginosa that functions during the host–pathogen interaction, and may open an avenue for the further mechanistic study of chronic respiratory diseases and the development of antibacterial therapy. A type I secretion effector, TesG, suppresses host immune response to promote chronic Pseudomonas aeruginosa infection." @default.
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- W2905949314 date "2019-01-07" @default.
- W2905949314 modified "2023-10-15" @default.
- W2905949314 title "TesG is a type I secretion effector of Pseudomonas aeruginosa that suppresses the host immune response during chronic infection" @default.
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- W2905949314 doi "https://doi.org/10.1038/s41564-018-0322-4" @default.
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