Publikationsdatenbank

SPI2 T3SS effectors facilitate enterocyte apical to basolateral transmigration of Salmonella-containing vacuoles in vivo (2021)

Art

Zeitschriftenartikel / wissenschaftlicher Beitrag

Autoren

Fulde, Marcus (WE 7)

van Vorst, Kira (WE 7)

Zhang, Kaiyi

Westermann, Alexander J.

Busche, Tobias

Huei, Yong Chiun

Welitschanski, Katharina

Froh, Isabell

Pägelow, Dennis (WE 7)

Plendl, Johanna (WE 1)

Pfarrer, Christiane

Kalinowski, Jörn

Vogel, Jörg

Valentin-Weigand, Peter

Hensel, Michael

Tedin, Karsten (WE 7)

Repnik, Urska

Hornef, Mathias W.

Quelle

Gut microbes

Bandzählung: 13

Heftzählung: 1

Seiten: Article: 1973836

ISSN: 1949-0976

Sprache

Englisch

Verweise

URL (Volltext): https://www.tandfonline.com/doi/full/10.1080/19490976.2021.1973836

DOI: 10.1080/19490976.2021.1973836

Pubmed: 34542008

Kontakt

Institut für Mikrobiologie und Tierseuchen

Robert-von-Ostertag-Str. 7-13
14163 Berlin
+49 30 838 51843 / 66949
mikrobiologie@vetmed.fu-berlin.de

Abstract / Zusammenfassung

Salmonella pathogenicity island (SPI) 2 type three secretion system (T3SS)-mediated effector molecules facilitate bacterial survival in phagocytes but their role in the intestinal epithelium in vivo remains ill-defined. Using our neonatal murine infection model in combination with SPI2 reporter technology and RNA-Seq of sorted primary enterocytes, we demonstrate expression of SPI2 effector molecules by intraepithelial Salmonella Typhimurium (S. Typhimurium). Contrary to expectation, immunostaining revealed that infection with SPI2 T3SS-mutants resulted in significantly enlarged intraepithelial Salmonella-containing vacuoles (SCV) with altered cellular positioning, suggesting impaired apical to basolateral transmigration. Also, infection with isogenic tagged S. Typhimurium strains revealed a reduced spread of intraepithelial SPI2 T3SS mutant S. Typhimurium to systemic body sites. These results suggest that SPI2 T3SS effector molecules contribute to enterocyte apical to basolateral transmigration of the SCV during the early stage of the infection.