Ironing out macrophages in atherosclerosis

Area of Science:

• Cardiovascular Science
• Immunology
• Metabolic Research

Background:

• Atherosclerosis is a leading cause of global mortality.
• Macrophages are central to atherosclerosis pathogenesis and iron homeostasis.
• Macrophage iron metabolism is increasingly recognized as critical in the "iron hypothesis" of atherosclerosis.

Approach:

• This review synthesits existing research on macrophage iron's role in atherosclerosis.
• It examines various macrophage phenotypes (M1, M2, Mox) and their iron handling.
• Contradictory findings are discussed with proposed explanations.

Key Points:

• Different macrophage phenotypes exhibit distinct iron handling capabilities.
• Macrophage iron status influences immune function and immunometabolism.
• These processes impact the progression of atherosclerosis.

Conclusions:

• Macrophage iron is a significant factor in atherosclerosis development.
• Understanding macrophage iron dysregulation is crucial.
• Pharmaceutical modulation of macrophage iron presents a viable therapeutic avenue for atherosclerosis.