Macrophage Biology, Classification, and Phenotype in Cardiovascular Disease: JACC Macrophage in CVD Series (Part 1)

Area of Science:

• Immunology
• Cardiovascular Science
• Cell Biology

Background:

• Macrophages are abundant, diverse leukocytes crucial in regulating cardiovascular disease.
• Their functions include pathogen sensing, debris clearance, inflammation modulation, and cytokine production.
• Recent advances highlight macrophage heterogeneity and developmental biology.

Purpose of the Study:

• To provide a foundational understanding of macrophage biology.
• To explore macrophage development, heterogeneity, phenotype, and tissue-specific differentiation.
• To establish a basis for understanding macrophage roles in cardiovascular disease.

Main Methods:

• Review of current scientific literature.
• Analysis of recent technological advancements in immune cell analysis.
• Focus on fundamental principles of macrophage biology.

Main Results:

• Macrophages exhibit significant heterogeneity and diverse functions.
• Ontogeny and tissue-specific differentiation are key aspects of macrophage biology.
• Advanced techniques allow high-resolution analysis of individual immune myeloid cells.

Conclusions:

• Understanding macrophage development and heterogeneity is essential for cardiovascular disease research.
• This review (Part 1) lays the groundwork for subsequent parts on macrophage roles in cardiovascular disease.
• Basic principles of macrophage biology are critical for comprehending their impact on heart health.