April 2026 in “Frontiers in Immunology” This study concluded that the CXCL12–CXCR4 signaling pathway significantly contributes to hair loss in androgenetic alopecia and alopecia areata by promoting inflammation and fibrosis, whereas inhibiting this pathway can restore hair growth and follicle health.
October 2025 in “Cell Reports” This study found that regulatory T cells accumulate in hair follicle epithelium via the Cxcr4-Cxcl12 axis, partially influenced by glucocorticoid receptor signaling, promoting hair regeneration; similar mechanisms were observed in human and murine skin.
April 2022 in “Biomedicine & Pharmacotherapy” This study found that CXCL12 inhibits hair growth via the CXCR4/STAT signaling pathway, suggesting that targeting this pathway could be a promising approach for promoting hair growth.
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July 2016 in “Journal of Immunology” In this study, blocking the CXCR3 receptor in mice prevented the development of alopecia areata by inhibiting the accumulation of specific T cells in the skin, suggesting a potential therapeutic approach for humans.
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October 2019 This study found that skin-infiltrating neutrophils play a crucial role in triggering chronic itch in atopic dermatitis by promoting skin hyperinnervation and enhanced expression of itch signaling molecules in a mouse model.