Calcification of Vascular Smooth Muscle Cells and Imaging of Aortic Calcification and Inflammation

Area of Science:

• Biomedical imaging
• Cardiovascular research
• Molecular mechanisms of atherosclerosis

Background:

• Cardiovascular disease (CVD) is a leading global cause of death, characterized by atherosclerotic plaques in arteries.
• Vascular calcification, a key feature of atherosclerosis, predicts future cardiovascular events.
• Understanding atherosclerosis mechanisms requires advanced animal and cell-based models.

Purpose of the Study:

• To detail a method for imaging aortic calcification and macrophage infiltration using near-infrared fluorescent probes.
• To describe an in vitro method for inducing and studying vascular calcification in smooth muscle cells.
• To facilitate the discovery of novel therapeutic targets for cardiovascular disease.

Main Methods:

• Ex vivo quantification of aortic calcification and macrophage accumulation using two spectrally distinct near-infrared fluorescent imaging probes.
• Isolation and culturing of animal aortic vascular smooth muscle cells.
• Induction of calcification in cultured smooth muscle cells from murine aortas and human coronary arteries.

Main Results:

• Near-infrared fluorescent imaging enables ex vivo quantification of calcification and macrophage accumulation in the entire aorta.
• The described in vitro model allows for the study of vascular calcification in smooth muscle cells.
• These methods advance the understanding of inflammation-calcification interplay in atherosclerosis.

Conclusions:

• Novel imaging probes and in vitro models provide powerful tools for atherosclerosis research.
• These methods can elucidate molecular mechanisms linking inflammation and calcification.
• The findings may lead to the identification of new therapeutic strategies for cardiovascular disease.