Stress-Induced Cxcl13 Regulates Pancreatic Exocrine Homeostasis, Age-Related Chronic Inflammation, And Cancer Progression
Our bodies have remarkable ways of responding to stress, even at the cellular level. New research has uncovered a fascinating pathway in the pancreas that normally helps the organ repair itself after stress. When pancreatic cells experience stress, they release a molecule called CXCL13. This molecule kicks off a temporary repair program, protecting the stressed cells and encouraging nearby healthy cells to multiply, all while briefly allowing these cells to hide from the immune system to complete their repair. This ensures the pancreas can heal without excessive inflammation or scarring.
However, this protective system can go awry. As we age, or when this pathway is constantly active, it becomes detrimental. Instead of a quick repair, the continuous activation of this signaling pathway leads to a buildup of old, damaged cells, persistent inflammation, and the accumulation of fat in the pancreas. This chronic activation contributes to age-related decline in pancreatic health.
Even more critically, this same pathway is hijacked by pancreatic cancers. Cancer cells continuously produce CXCL13, which not only helps them survive but also encourages surrounding healthy cells to become precancerous, accelerating tumor growth and inflammation. The good news is that blocking key components of this pathway has shown promise in reducing age-related pancreatic issues and slowing down cancer growth in models, suggesting a potential new target for therapies to combat both aging-related pancreatic diseases and pancreatic cancer.
Source: link to paper