Protein TRF2 Identified as Key Regulator in Muscle Regeneration

Researchers at the University of Pennsylvania's Perelman School of Medicine discovered that the protein TRF2 is crucial for muscle stem cell repair. Previously known for protecting chromosome ends, TRF2 now appears to maintain stem cell identity and coordinate muscle regeneration. Without TRF2, damaged muscle accumulates fat and scar tissue instead of healthy tissue. This finding, published in Science Advances, expands understanding of muscle repair mechanisms and could inform future therapeutic strategies.