Pseudomonas aeruginosa injects type III effector ExoS into epithelial cells through the function of type IV pili

FEBS Letters
Naoki HayashiNaomasa Gotoh

Abstract

Translocation of Pseudomonas aeruginosa through epithelial tissues can cause sepsis. Here, we examined whether P. aeruginosa penetrates epithelial cell layers using type IV pili (TFP). Deletion of TFP (pilA) did not affect association with Caco-2 cells, although it decreased penetration through, and disruption of, Caco-2 cell monolayers. We found that TFP are necessary for injection of the type III effector ExoS, which impairs defense against P. aeruginosa penetration, into host cells. Deletion of pilA attenuated oral infection in silkworms. We conclude that P. aeruginosa injects ExoS into cells through the function of TFP, enabling penetration of epithelial barriers.

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Citations

Jan 27, 2016·Journal of Infection and Chemotherapy : Official Journal of the Japan Society of Chemotherapy·Mototsugu ShikataNaomasa Gotoh
Aug 1, 2020·International Journal of Molecular Sciences·Rushikesh Deshpande, Chunbin Zou
Jan 31, 2018·Frontiers in Cellular and Infection Microbiology·Guillaume GolovkinePhilippe Huber
Jul 11, 2018·Frontiers in Immunology·Meredith J CraneAmanda M Jamieson
Dec 13, 2016·Medical Science Monitor : International Medical Journal of Experimental and Clinical Research·Shuangqi CaiJinliang Kong
Jun 29, 2021·Virulence·Charles D MorinGee W Lau

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