March 2023 in “Scientific reports” Hair growth-related cells need the enzyme SCD1 to help maintain the area that supports hair growth.
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January 2026 The study investigates the role of the microRNA-200 family (miR-200s) in normal epithelial development, particularly in hair follicles. It finds that miR-200s are abundant in hair matrix progenitors but absent in the upper hair follicle, where sebaceous gland (SG) and hair follicle stem cells are specified. Elevated miR-200 expression in this region prevents SG fate specification while allowing hair morphogenesis. The study reveals that miR-200s regulate negative regulators of WNT signaling and cell cycle regulators, disrupting the expression patterns of WNT activity and SOX9, which is crucial for SG development. The research highlights miR-200's role in inhibiting SOX9-dependent lipid metabolism and cell cycle progression, blocking SG specification and revealing a SOX9 regulatory network essential for SG development.
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May 2022 in “Cell discovery” The study found new details about human hair growth and suggests that preventing a specific biological pathway could potentially treat hair graying.
Different genes and pathways are active in yak skin and hair cells, affecting hair growth and immune responses.
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October 2005 in “Journal of Investigative Dermatology” Hair follicle stem cells have greater longevity and adhesion, while transit-amplifying cells are more mobile.