New study reveals how vascular cells drive coronary artery disease risk

A new study has uncovered how changes in vascular smooth muscle cells (VSMCs) affect the risk of coronary artery disease (CAD). Published in Nature Communications, the research reveals that these cells, once thought to be passive, can shift into harmful states that worsen inflammation and plaque instability. The findings highlight potential targets for future treatments.

Scientists used computational modelling to track how VSMCs transition between different states. They identified specific molecular pathways that control these shifts, including key transcription factors like KLF4 and myocardin. These act as switches, balancing whether the cells remain stable or turn pro-inflammatory.

The study linked five of these VSMC state transitions to known genetic risk factors for CAD. Among the most relevant were the CDKN2B-AS1 region (9p21 locus), ADAMTS7, PHACTR1, SMAD3, and COL4A1/COL4A2. Epigenetic changes, such as altered histone acetylation, were also found to lock cells into damaging phenotypes.

To confirm their findings, the team tested the results in living models. These experiments supported the idea that targeting VSMC transitions could offer new ways to treat or prevent coronary artery disease.

The research connects dynamic VSMC changes to established genetic risks for CAD. By pinpointing how these cells shift into harmful states, the study opens possibilities for therapies aimed at stabilising their behaviour. This could eventually lead to better management of coronary artery disease.