September 2025 in “JID Innovations” This study suggests that macrophages, particularly CD206+ macrophages, play a crucial role in squaric acid dibutylester-induced hair growth in alopecia areata treatment.
July 2024 in “Journal of Investigative Dermatology” This study suggests that macrophages, especially CD206+ subsets, play a key role in hair growth induced by squaric acid dibutyl ester, a therapy used for alopecia areata.
October 2023 in “bioRxiv (Cold Spring Harbor Laboratory)” This study demonstrated that disrupting EGFR signaling in mice leads to immune sensitivity compromising the hair follicle's protective environment, but JAK1/2 inhibition can restore this immune privilege and stimulate hair growth, suggesting a potential therapy for scarring hair loss diseases like cicatricial alopecia.
August 2006 in “Experimental dermatology” This study found that nerve growth factor signaling in organ-cultured human hair follicles inhibits hair growth by inducing apoptosis-driven hair follicle regression.
April 2016 in “The journal of investigative dermatology/Journal of investigative dermatology” This study found that hair follicles may provide a safe space for tumor cells in mice, suggesting a potential target for cancer prevention during the dormant phase of tumor development.