Sirt2 Delays Vulnerable Plaque Progression By Modulating Vascular Smooth Muscle Cell Senescence
Imagine tiny, dangerous fatty deposits forming in your arteries, like rust in a pipe. These are called vulnerable plaques, and if they rupture, they can lead to serious problems like heart attacks or strokes. A key player in the formation and rupture of these plaques are cells in your blood vessel walls, known as vascular smooth muscle cells. When these cells get old and stop functioning properly, a process called senescence, they contribute to the progression of these dangerous plaques.
Recent research has shed light on a protein called SIRT2, which appears to be a crucial factor in delaying this process. Scientists found that by increasing the amount of SIRT2 specifically in these vascular smooth muscle cells, they could significantly slow down both the aging of these cells and the formation of vulnerable plaques. This protective effect seems to work through a specific communication network within the cells, known as the AMPK/FOXO3a pathway, which is involved in regulating cell metabolism and stress responses.
Interestingly, a compound called resveratrol, often found in grapes and red wine, was also shown to exert its protective effects against cellular aging in these blood vessel cells by activating this very same SIRT2-AMPK-FOXO3a pathway. These findings suggest that targeting SIRT2 could be a promising new strategy to prevent the formation of these dangerous plaques and ultimately reduce the risk of acute coronary syndromes.
Source: link to paper