Whether you get a scar or heal perfectly depends entirely on the specific way your immune cells decide to die.
March 23, 2026
Original Paper
Modes of programmed macrophage cell death govern outcome of cutaneous wound healing
bioRxiv · 10.64898/2026.03.19.712831
The Takeaway
Researchers discovered that if white blood cells die via 'necroptosis' (an explosive, inflammatory death), it ruins the tissue structure and prevents healing. However, if those same cells are triggered to undergo 'apoptosis' (a quiet, programmed shutdown), the wound heals cleanly and scarring is significantly reduced, suggesting the 'mood' of a cell's death dictates the skin's recovery.
From the abstract
Misregulation of tissue repair programs can severely compromise repair outcome. Timely clearance of inflammatory macrophages through regulated cell death is a prerequisite for resolution of inflammation and successful repair. How different modes of macrophage regulated cell death regulate repair and direct healing outcome remains unclear. Using inducible genetic models to trigger macrophage necroptosis (FADDiMKO) or enhance apoptosis of macrophages (cIAP1iMKOcIAP2-/-), we reveal opposing effects