Researchers from the Salk Institute in the United States have identified a new pathway that explains why the immune system, under certain circumstances, can contribute to tumor growth. The discovery centers on a family of proteins whose chronic exposure is associated with mitochondrial dysfunction.
This signaling pathway, when activated for prolonged periods, causes immunosuppression, meaning a weakening of the immune system's ability to recognize and destroy cancer cells. The researchers managed to trace the link between chronic exposure to these proteins and the malfunction of mitochondria, which are the cellular structures responsible for energy production.
The resulting immunosuppression allows tumor cells to develop and proliferate more efficiently, since the immune system can no longer perform its protective function. This mechanism represents a significant advance in understanding how the tumor microenvironment can manipulate the body's defenses.
The results of this study pave the way for the development of new therapeutic strategies that target this specific pathway, potentially allowing immune function to be restored and improving cancer treatments.
