Endothelial Nitric Oxide Synthase is an enzyme that is constitutively expressed in endothelial cells, which line the blood vessels.
-Vascular Signaling, Angiogenesis, and Context-Dependent Effects
-It generates nitric oxide (NO) from L-arginine in a calcium/calmodulin- and phosphorylation-dependent manner.
eNOS is a vascular and microenvironmental regulator that usually supports cancer by enabling angiogenesis, perfusion, and survival signaling. Its effects are highly context-dependent—beneficial for normal tissue homeostasis, but often co-opted by tumors to sustain growth and resist therapy. Therapeutic strategies typically modulate upstream pathways rather than directly targeting eNOS itself.
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