Sex differences in skin stem cell coordination affect wound repair in mice
A study in living mice tracked individual skin stem cells for five months and found that female cells renew and repair tissue in a more coordinated manner than male cells. Sex hormones appear to drive this synchronization, which may help explain faster wound healing in female mice and could inform personalized skin treatments.
The work appeared in Nature and involved teams at Université libre de Bruxelles and the University of Cambridge, led by Cédric Blanpain with Benjamin Simons. Using advanced microscopy through living mouse skin, researchers followed the same stem cells and their progeny for five months—an unusually long window.
Skin’s outer layer is continually replaced. Stem cells at its base divide; some daughters remain stem cells, while others differentiate into barrier cells that stop dividing, migrate upward, and are shed. The study also identified an intermediate state with limited division capacity. Sex hormones controlled the male-female coordination difference.
If these mouse findings translate, they may shape future skin care and wound treatment by considering sex as a biological variable. Patients with slow-healing wounds, burns, or chronic skin conditions could potentially benefit from sex-informed therapies, though clinical relevance remains uncertain. Researchers and clinicians may need to account for hormonal status in trials and treatment design. The work could also encourage broader study of sex differences beyond reproductive organs, affecting how biomedical research is prioritized and interpreted.