Roles of Macrophages in Atherogenesis

Area of Science:

• Cardiovascular Biology
• Immunology
• Cell Biology

Background:

• Atherosclerosis is a chronic inflammatory disease leading to plaque rupture, myocardial infarction, stroke, and sudden cardiac death.
• Monocytes differentiate into macrophages in the arterial wall, contributing to plaque formation and regression.
• Macrophages engulf lipoproteins, becoming foam cells, and their phenotype is influenced by various stimuli.

Purpose of the Study:

• To review recent advances in understanding the roles of macrophages in atherosclerosis pathogenesis.
• To discuss the heterogeneity of macrophages in atherosclerotic lesions.
• To describe macrophage-based therapies for atherosclerosis management.

Main Methods:

• Review of recent scientific literature on macrophage roles in atherosclerosis.
• Analysis of findings from single-cell sequencing techniques addressing macrophage heterogeneity.
• Synthesis of information on macrophage functions including polarization, efferocytosis, proliferation, and apoptosis.

Main Results:

• Macrophages are central to all stages of atherosclerosis, from initiation to advanced disease.
• Macrophage heterogeneity, revealed by single-cell sequencing, impacts disease progression.
• Macrophage phenotype modulation influences key processes like foam cell formation and inflammation.

Conclusions:

• Macrophages are critical players in atherosclerosis pathogenesis, influencing lesion development and stability.
• Targeting macrophage functions and heterogeneity offers potential therapeutic strategies for atherosclerosis.
• Further research into macrophage biology is essential for advancing atherosclerosis treatment.