UCLA Researchers Identify Senescent Cells as Key to Reversing Liver Damage in Mice
Researchers at UCLA have discovered that a specific group of immune cells, known as senescent cells, accumulate in aging tissues and contribute to liver damage in individuals with fatty liver disease. These cells, often referred to as 'zombie cells,' cease to divide but continue to release inflammatory signals that harm surrounding cells. The study, published in Nature Aging, found that removing these cells in mice led to a significant reduction in inflammation and reversal of liver damage, even when the mice continued on an unhealthy diet. The research highlights the role of macrophages, a type of immune cell, in this process. The team identified a molecular signature, involving proteins p21 and TREM2, that marks macrophages as senescent. This discovery could pave the way for new treatments targeting these cells to combat liver disease and potentially other age-related conditions. 
