A large panel of chicken cells are invaded <italic toggle="yes">in vivo</italic> by <italic toggle="yes">Salmonella</italic> Typhimurium even when depleted of all known invasion factors

Poultry are the main source of human infection by Salmonella. As infected poultry are asymptomatic, identifying infected poultry farms is difficult, thus controlling animal infections is of primary importance. As cell tropism is known to govern disease, our aim was therefore to identify infected hos...

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Autores principales: S. M. Roche, S. Holbert, Y. Le Vern, C. Rossignol, A. Rossignol, P. Velge, I. Virlogeux-Payant
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Publicado: The Royal Society 2021
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Acceso en línea:https://doaj.org/article/b813dbe696b0465cac609f3aaeb5f015
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spelling oai:doaj.org-article:b813dbe696b0465cac609f3aaeb5f0152021-11-17T08:06:16ZA large panel of chicken cells are invaded <italic toggle="yes">in vivo</italic> by <italic toggle="yes">Salmonella</italic> Typhimurium even when depleted of all known invasion factors10.1098/rsob.2101172046-2441https://doaj.org/article/b813dbe696b0465cac609f3aaeb5f0152021-11-01T00:00:00Zhttps://royalsocietypublishing.org/doi/10.1098/rsob.210117https://doaj.org/toc/2046-2441Poultry are the main source of human infection by Salmonella. As infected poultry are asymptomatic, identifying infected poultry farms is difficult, thus controlling animal infections is of primary importance. As cell tropism is known to govern disease, our aim was therefore to identify infected host–cell types in the organs of chicks known to be involved in Salmonella infection and investigate the role of the three known invasion factors in this process (T3SS-1, Rck and PagN). Chicks were inoculated with wild-type or isogenic fluorescent Salmonella Typhimurium mutants via the intracoelomic route. Our results show that liver, spleen, gall bladder and aortic vessels could be foci of infection, and that phagocytic and non-phagocytic cells, including immune, epithelial and endothelial cells, are invaded in vivo in each organ. Moreover, a mutant defective for the T3SS-1, Rck and PagN remained able to colonize organs like the wild-type strain and invaded non-phagocytic cells in each organ studied. As the infection of the gall bladder had not previously been described in chicks, invasion of gall bladder cells was confirmed by immunohistochemistry and infection was shown to last several weeks after inoculation. Altogether, for the first time these findings provide insights into cell tropism of Salmonella in relevant organs involved in Salmonella infection in chicks and also demonstrate that the known invasion factors are not required for entry into these cell types.S. M. RocheS. HolbertY. Le VernC. RossignolA. RossignolP. VelgeI. Virlogeux-PayantThe Royal SocietyarticleSalmonellapoultryhost–pathogen interactioninvasiongall bladderBiology (General)QH301-705.5ENOpen Biology, Vol 11, Iss 11 (2021)
institution DOAJ
collection DOAJ
language EN
topic Salmonella
poultry
host–pathogen interaction
invasion
gall bladder
Biology (General)
QH301-705.5
spellingShingle Salmonella
poultry
host–pathogen interaction
invasion
gall bladder
Biology (General)
QH301-705.5
S. M. Roche
S. Holbert
Y. Le Vern
C. Rossignol
A. Rossignol
P. Velge
I. Virlogeux-Payant
A large panel of chicken cells are invaded <italic toggle="yes">in vivo</italic> by <italic toggle="yes">Salmonella</italic> Typhimurium even when depleted of all known invasion factors
description Poultry are the main source of human infection by Salmonella. As infected poultry are asymptomatic, identifying infected poultry farms is difficult, thus controlling animal infections is of primary importance. As cell tropism is known to govern disease, our aim was therefore to identify infected host–cell types in the organs of chicks known to be involved in Salmonella infection and investigate the role of the three known invasion factors in this process (T3SS-1, Rck and PagN). Chicks were inoculated with wild-type or isogenic fluorescent Salmonella Typhimurium mutants via the intracoelomic route. Our results show that liver, spleen, gall bladder and aortic vessels could be foci of infection, and that phagocytic and non-phagocytic cells, including immune, epithelial and endothelial cells, are invaded in vivo in each organ. Moreover, a mutant defective for the T3SS-1, Rck and PagN remained able to colonize organs like the wild-type strain and invaded non-phagocytic cells in each organ studied. As the infection of the gall bladder had not previously been described in chicks, invasion of gall bladder cells was confirmed by immunohistochemistry and infection was shown to last several weeks after inoculation. Altogether, for the first time these findings provide insights into cell tropism of Salmonella in relevant organs involved in Salmonella infection in chicks and also demonstrate that the known invasion factors are not required for entry into these cell types.
format article
author S. M. Roche
S. Holbert
Y. Le Vern
C. Rossignol
A. Rossignol
P. Velge
I. Virlogeux-Payant
author_facet S. M. Roche
S. Holbert
Y. Le Vern
C. Rossignol
A. Rossignol
P. Velge
I. Virlogeux-Payant
author_sort S. M. Roche
title A large panel of chicken cells are invaded <italic toggle="yes">in vivo</italic> by <italic toggle="yes">Salmonella</italic> Typhimurium even when depleted of all known invasion factors
title_short A large panel of chicken cells are invaded <italic toggle="yes">in vivo</italic> by <italic toggle="yes">Salmonella</italic> Typhimurium even when depleted of all known invasion factors
title_full A large panel of chicken cells are invaded <italic toggle="yes">in vivo</italic> by <italic toggle="yes">Salmonella</italic> Typhimurium even when depleted of all known invasion factors
title_fullStr A large panel of chicken cells are invaded <italic toggle="yes">in vivo</italic> by <italic toggle="yes">Salmonella</italic> Typhimurium even when depleted of all known invasion factors
title_full_unstemmed A large panel of chicken cells are invaded <italic toggle="yes">in vivo</italic> by <italic toggle="yes">Salmonella</italic> Typhimurium even when depleted of all known invasion factors
title_sort large panel of chicken cells are invaded <italic toggle="yes">in vivo</italic> by <italic toggle="yes">salmonella</italic> typhimurium even when depleted of all known invasion factors
publisher The Royal Society
publishDate 2021
url https://doaj.org/article/b813dbe696b0465cac609f3aaeb5f015
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