Beyond Self-Recycling: Cell-Specific Role of Autophagy in Atherosclerosis

Area of Science:

• Cardiovascular Biology
• Cellular Biology
• Immunology

Background:

• Atherosclerosis is a leading cause of global mortality, characterized by arterial wall inflammation.
• Its complex pathophysiology involves disrupted intracellular pathways and cellular crosstalk.
• Autophagy, a cellular degradation process, is increasingly implicated in disease development.

Purpose of the Study:

• To review recent findings on the cell-type-specific roles of autophagy in atherosclerosis.
• To explore both established and novel mechanisms of autophagy in atherogenesis.
• To highlight therapeutic strategies targeting autophagy for cardiovascular disease.

Main Methods:

• Analysis of in vitro and in vivo studies.
• Investigation of cell-specific deletion of autophagy-related genes (ATGs).
• Review of current literature on autophagy's role in endothelial, smooth muscle, and myeloid cells.

Main Results:

• Defective autophagy in specific cell types (endothelial, smooth muscle, myeloid) contributes mechanistically to atherogenesis.
• Both canonical (catabolic) and noncanonical autophagy functions are relevant.
• Evidence supports autophagy's role in atherosclerosis progression.

Conclusions:

• Cell-specific autophagy plays a critical, context-dependent role in atherosclerosis.
• Understanding these roles is key to developing targeted therapies.
• Modulating autophagy presents a promising avenue for cardiovascular disease prevention and treatment.