Regulatory T Cells in Skin Utilize the Cxcr4-Cxcl12 Axis to Promote Hair Follicle Regeneration
October 2025
in “
Cell Reports
”
TLDR Regulatory T cells help hair growth by using the Cxcr4-Cxcl12 pathway.
The study explores the role of regulatory T cells (Tregs) in hair follicle regeneration, emphasizing the Cxcr4-Cxcl12 chemokine axis. Tregs, expressing Cxcr4, accumulate in hair follicle epithelium, a process supported by glucocorticoid receptor signaling. Disruption of this axis results in suboptimal hair growth, highlighting its importance in hair regeneration. The research, conducted on genetically modified mice, shows that Cxcr4 expression is crucial for Treg accumulation near hair follicles, which supports hair growth by stimulating hair follicle stem cells. Similar expression patterns in human scalp skin suggest an evolutionarily conserved mechanism, with potential implications for alopecia treatment by enhancing Treg trafficking to hair follicles.
