This research investigates whether activation of the sympathetic nervous system can enhance tissue regeneration. Using engineered neural switches in mice, the study demonstrated improved healing after ear injury, including growth of nerves, blood vessels, and cartilage. The findings suggest that nervous system regulation may play an important role in future regenerative medicine therapies.

Healing depends on a balance between extracellular matrix stiffness and cellular recycling through autophagy. This research shows that disrupted balance leads to chronic wounds or fibrotic scarring. By engineering materials with tunable stiffness, the work reveals how cells “sense” their environment, opening new paths to guide healthier wound healing.