Role of proapoptotic BH3-only proteins in Listeria monocytogenes infection.

Details

Serval ID
serval:BIB_BE45D77E6215
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Role of proapoptotic BH3-only proteins in Listeria monocytogenes infection.
Journal
European Journal of Immunology
Author(s)
Margaroli C., Oberle S., Lavanchy C., Scherer S., Rosa M., Strasser A., Pellegrini M., Zehn D., Acha-Orbea H., Ehirchiou D.
ISSN
1521-4141 (Electronic)
ISSN-L
0014-2980
Publication state
Published
Issued date
2016
Peer-reviewed
Oui
Volume
46
Number
6
Pages
1427-1437
Language
english
Abstract
The ability of pathogens to influence host cell survival is a crucial virulence factor. Listeria monocytogenes (Lm) infection is known to be associated with severe apoptosis of hepatocytes and spleen cells. This impairs host defense mechanisms and thereby facilitates the spread of intracellular pathogens. The general mechanisms of apoptosis elicited by Lm infection are understood, however, the roles of BH3-only proteins during primary Lm infection have not been examined. To explore the roles of BH3-only proteins in Lm-induced apoptosis, we studied Listeria infections in mice deficient in Bim, Bid, Noxa or double deficient in BimBid or BimNoxa. We found that BimNoxa double knockout mice were highly resistant to high-dose challenge with Listeria. Decreased bacterial burden and decreased host cell apoptosis were found in the spleens of these mice. The ability of the BH3-deficient mice to clear bacterial infection more efficiently than WT was correlated with increased concentrations of ROS, neutrophil extracellular DNA trap release and downregulation of TNF-α. Our data show a novel pathway of infection-induced apoptosis that enhances our understanding of the mechanism by which BH3-only proteins control apoptotic host cell death during Listeria infection.
Keywords
Apoptosis, Cytokines, Host-pathogens interactions, Immune evasion, TNF, Transgenic models
Pubmed
Web of science
Open Access
Yes
Create date
19/04/2016 18:18
Last modification date
20/08/2019 16:32
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