Article (Scientific journals)
Occurrence and repair of alkylating stress in the intracellular pathogen Brucella abortus.
Poncin, Katy; Roba, Agnès; Jimmidi, Ravikumar et al.
2019In Nature Communications, 10 (1), p. 4847
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Keywords :
Alkylation; Animals; Brucella abortus/genetics/metabolism; Brucellosis; DNA Damage/genetics; DNA Methylation/genetics; DNA Repair/genetics; Host-Pathogen Interactions/genetics; Macrophages/metabolism; Mice; RAW 264.7 Cells; Stress, Physiological/genetics; Vacuoles/metabolism
Abstract :
[en] It is assumed that intracellular pathogenic bacteria have to cope with DNA alkylating stress within host cells. Here we use single-cell reporter systems to show that the pathogen Brucella abortus does encounter alkylating stress during the first hours of macrophage infection. Genes encoding direct repair and base-excision repair pathways are required by B. abortus to face this stress in vitro and in a mouse infection model. Among these genes, ogt is found to be under the control of the conserved cell-cycle transcription factor GcrA. Our results highlight that the control of DNA repair in B. abortus displays distinct features that are not present in model organisms such as Escherichia coli.
Disciplines :
Immunology & infectious disease
Author, co-author :
Poncin, Katy
Roba, Agnès
Jimmidi, Ravikumar
Potemberg, Georges  ;  Centre Hospitalier Universitaire de Liège - CHU > Département de Physique Médicale > STA Assurance qualité
Fioravanti, Antonella
Francis, Nayla
Willemart, Kévin
Zeippen, Nicolas
Machelart, Arnaud
Biondi, Emanuele G.
Muraille, Eric
Vincent, Stéphane P.
De Bolle, Xavier
More authors (3 more) Less
Language :
English
Title :
Occurrence and repair of alkylating stress in the intracellular pathogen Brucella abortus.
Publication date :
2019
Journal title :
Nature Communications
eISSN :
2041-1723
Publisher :
Nature Publishing Group, United Kingdom
Volume :
10
Issue :
1
Pages :
4847
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 16 March 2021

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