Living with a fatty liver disease, known as MASH, can lead to serious liver inflammation and scarring over time. Scientists are looking closely at how the body clears out dying cells to keep the liver healthy. This process is called efferocytosis. When this cleanup fails, it can trigger a cycle of inflammation and permanent tissue damage.
Researchers reviewed experimental models to see how three specific receptors—TIM4, TREM2, and MerTK—impact this process. They found that restoring TIM4 helps clear dead cells and produces a protective substance called interleukin-10, which limits scarring. In contrast, a specific change in the TREM2 receptor can hurt the cleanup process and keep inflammation active. They also noted that MerTK signaling can lead to more scarring.
It is important to note that these findings come from experimental models, not from human patients. Because of this, we do not yet know if these specific signals behave the same way in people with MASH. Scientists still need to figure out how to keep the healthy cell-clearing process active while stopping the signals that cause scarring.
