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© Pierre Gounon
Entrée de Listeria dans une cellule épithéliale (Grossissement X 10000). Image colorisée.
Publication : FEMS microbiology letters

Listeria monocytogenes ferritin protects against multiple stresses and is required for virulence.

Team: Bacteria-Cell Interactions
Team: Group : Bacterial Pathogenesis and Antibacterial Agents
Team: Yersinia
Member: Olivier Dussurget
Scientific Fields
Diseases
Organisms
Applications
Technique

Published in FEMS microbiology letters - 15 Sep 2005

Dussurget O, Dumas E, Archambaud C, Chafsey I, Chambon C, Hébraud M, Cossart P,

Link to Pubmed [PMID] – 16098690

FEMS Microbiol Lett 2005 Sep; 250(2): 253-61

In this study, the role of Listeria monocytogenes ferritin was investigated. The fri gene encoding the ferritin was deleted and the phenotype of the mutant was analyzed demonstrating that ferritin is necessary for optimal growth in minimal medium in both presence and absence of iron, as well as after cold- and heat-shock. We also showed that ferritin provides protection against reactive oxygen species and is essential for full virulence of L. monocytogenes. A comparative proteomic analysis revealed an effect of the fri deletion on the levels of listeriolysin O and several stress proteins. Together, our study demonstrates that fri has multiple roles that contribute to Listeria virulence.