Regulatory T Cells in Skin Regeneration and Wound Healing

The review "Regulatory T cells in skin regeneration and wound healing" discusses the role of Regulatory T cells (Tregs) in maintaining immune balance and facilitating skin wound healing. Tregs prevent excessive immune responses and inflammation, and are instrumental in skin regeneration and wound repair. They also play a crucial role in hair follicle cycling and hair growth, with their absence leading to significantly reduced hair regrowth. Tregs are involved in conditions such as fibrosis, keloidosis, scarring, and alopecia areata, with studies showing reduced quantity and quality of Tregs in alopecia areata patients. In wound healing, Tregs facilitate the differentiation of hair follicle stem cells into reparative epithelial cells, control the local inflammatory environment, and facilitate wound closure. In a murine wound experiment, Treg-depletion led to a delay in re-epithelialization, a reduction in wound contraction, and impaired vascular maturation. The document concludes that understanding the diverse roles of Tregs could help decipher wound pathologies and establish new treatment modalities.