Article ; Online: The ArlRS two-component system is a regulator of Staphylococcus aureus-induced endothelial cell damage.
2018 Volume 37, Issue 2, Page(s) 289–292
Abstract: Staphylococcus aureus endovascular infections retain a high morbidity and mortality despite antibiotics and supportive care. The destruction of endothelial cells (ECs) is a critical step in the pathogenesis of S. aureus endovascular infections. In order ... ...
Abstract | Staphylococcus aureus endovascular infections retain a high morbidity and mortality despite antibiotics and supportive care. The destruction of endothelial cells (ECs) is a critical step in the pathogenesis of S. aureus endovascular infections. In order to better understand S. aureus-induced EC damage, we systematically screened a collection of two-component regulatory system mutants of methicillin-resistant S. aureus (MRSA) USA300 strain JE2 for damage induction in human umbilical vein ECs (HUVECs). This screen revealed that the two-component regulatory system ArlRS is required for maximum damage: arlRS inactivation leads to a > 70% reduction in damage. In a different genetic S. aureus background (RN6390, MSSA strain) arlRS inactivation had a smaller but also significant effect on EC damage. In both strains, the reduction in EC damage was accompanied by a significant reduction in internalization. In conclusion, we determined a novel role of ArlRS in S. aureus-induced EC damage, which will help to better understand the pathogenesis of S. aureus endovascular infection. |
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MeSH term(s) | Bacterial Proteins/genetics ; Cells, Cultured ; Human Umbilical Vein Endothelial Cells/pathology ; Humans ; Methicillin-Resistant Staphylococcus aureus/genetics ; Methicillin-Resistant Staphylococcus aureus/pathogenicity ; Protein Kinases/genetics ; Staphylococcal Infections/microbiology ; Staphylococcal Infections/pathology ; Trans-Activators/genetics |
Chemical Substances | Agr protein, Staphylococcus aureus ; ArlR protein, Staphylococcus aureus ; Bacterial Proteins ; Trans-Activators ; Protein Kinases (EC 2.7.-) ; ArlS protein, Staphylococcus aureus (EC 2.7.3.-) |
Language | English |
Publishing date | 2018-02 |
Publishing country | Germany |
Document type | Journal Article |
ZDB-ID | 603155-9 |
ISSN | 1435-4373 ; 0934-9723 ; 0722-2211 |
ISSN (online) | 1435-4373 |
ISSN | 0934-9723 ; 0722-2211 |
DOI | 10.1007/s10096-017-3130-5 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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