The bone morphogenetic protein (BMP) 9/10 receptor, ALK1, was recently shown to mediate LDL entry and transcytosis in endothelial cells. Here, Lee et al. show that genetic ablation of arterial endothelial ALK1 in mice limits atherosclerosis without affecting cholesterol or triglyceride levels and that a monoclonal antibody binding ALK1 efficiently blocks LDL transcytosis, but not BMP9 signaling, leading to a reduction in plaque burden.
- Sungwoon Lee
- Hubertus Schleer
- William C. Sessa
