Endothelial cell survival and autophagy pathways (EC Survival/Autophagy)

Endothelial cell survival and autophagy pathways represent a complex network of signaling cascades that maintain vascular integrity and homeostasis. Autophagy in the endothelium serves as a critical cytoprotective mechanism, allowing cells to degrade damaged organelles and proteins to survive under conditions of metabolic stress, hypoxia, or shear stress (PMID: 30107163). Key regulators of these pathways include the Mechanistic Target of Rapamycin (mTOR), which inhibits autophagy, and Adenosine Monophosphate-activated Protein Kinase (AMPK), which promotes it. Dysregulation of these pathways is a hallmark of endothelial dysfunction, contributing significantly to the pathogenesis of atherosclerosis, hypertension, and diabetic vasculopathy (PMID: 26333386). Pharmacological modulation of these pathways, such as through mTOR inhibitors or AMPK activators, is explored to enhance endothelial resilience or inhibit pathological angiogenesis in cancer and ocular diseases (PMID: 28611171). Because this entry describes a broad biological process involving multiple discrete molecular targets rather than a single receptor or enzyme, it is classified as a pathway rather than a specific therapeutic target.

Other names

Endothelial autophagyVascular endothelial survival signalingEndothelial cytoprotective autophagy

Drugs modulate these pathways by inhibiting mTORC1 to induce autophagy, activating AMPK to promote energy homeostasis, or inhibiting lysosomal acidification to block autophagic flux, thereby influencing endothelial cell viability and vascular function.