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Updated: Oct 14, 2025
Quantitative Analysis and Characterization of Atherosclerotic Lesions in the Murine Aortic Sinus
Published on: December 7, 2013
Molecular Interactions Between Vascular Smooth Muscle Cells and Macrophages in Atherosclerosis
Jahnic Beck-Joseph1, Maryam Tabrizian1, Stephanie Lehoux2
1Biomat'X Research Laboratories, Department of Biomedical Engineering, McGill University, Montreal, QC, Canada.
Insights
Atherosclerosis involves cellular activity and cholesterol buildup, leading to plaque formation and blood clots. Understanding interactions between vascular smooth muscle cells and macrophages is key for developing new cardiovascular treatments.
Area of Science:
- Cardiovascular Biology
- Cellular Biology
- Pathophysiology
Background:
- Atherosclerosis is a major cause of cardiovascular events, characterized by vascular remodeling and fatty plaque development.
- Complications include thrombotic occlusions due to blood clots forming at plaque sites.
- Vascular smooth muscle cells and macrophages are key cellular players in atherosclerosis progression.
Approach:
- This review synthesizes current knowledge on intercellular communications between vascular smooth muscle cells and macrophages.
- It discusses communication via soluble factors, direct physical contact, and extracellular vesicles.
- The review also covers scientific methods, general pathophysiology, and intracellular factors influencing vascular smooth muscle cell phenotype.
Key Points:
- Intercellular communication mechanisms between vascular smooth muscle cells and macrophages are crucial for understanding atherosclerosis.
- Cholesterol accumulation and cellular interactions drive vascular remodeling and plaque formation.
- Novel therapeutic strategies may emerge from a deeper understanding of these cellular dynamics.
Conclusions:
- A comprehensive review of current knowledge on cell-cell interactions in atherosclerosis is presented.
- The review highlights existing research gaps and suggests future research directions.
- Further investigation into intercellular communication is vital for advancing atherosclerosis treatment.
Abstract:
Atherosclerosis is the largest contributor toward life-threatening cardiovascular events. Cellular activity and cholesterol accumulation lead to vascular remodeling and the formation of fatty plaques. Complications arise from blood clots, forming at sites of plaque development, which may detach and result in thrombotic occlusions. Vascular smooth muscle cells and macrophages play dominant roles in atherosclerosis. A firm understanding of how these cells influence and modulate each other is pivotal for a better understanding of the disease and the development of novel therapeutics. Recent studies have investigated molecular interactions between both cell types and their impact on disease progression. Here we aim to review the current knowledge. Intercellular communications through soluble factors, physical contact, and extracellular vesicles are discussed. We also present relevant background on scientific methods used to study the disease, the general pathophysiology and intracellular factors involved in phenotypic modulation of vascular smooth muscle cells. We conclude this review with a discussion of the current state, shortcomings and potential future directions of the field.
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