The success of Staphylococcus aureus as a major cause for endovascular infections depends on effective
interactions with blood-vessel walls. We have previously shown that S. aureus uses its wall teichoic acid (WTA), a surface
glycopolymer, to attach to endothelial cells. However, the endothelial
WTA receptor remained unknown. We show here that the endothelial oxidized
low-density lipoprotein receptor 1 (LOX-1) interacts with S. aureus WTA and permits effective binding of S. aureus to human endothelial cells. Purified LOX-1
bound to isolated S. aureus WTA. Ectopic
LOX-1 expression led to increased binding of S. aureus wild type but not of a WTA-deficient mutant to a cell line, and
LOX-1 blockage prevented S. aureus binding
to endothelial cells. Moreover, WTA and LOX-1 expression levels correlated
with the efficacy of the S. aureus–endothelial
interaction. Thus, LOX-1 is an endothelial ligand for S. aureus, whose blockage may help to prevent or
treat severe endovascular infections.