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Hair Follicle Stem Cell (HFSC)
- Target
- HFSC
- Molecular classification
- Stem Cell, Progenitor Cell
01
Overview
Hair follicle stem cells (HFSCs) are multipotent adult stem cells located primarily in the bulge region of the hair follicle. They are essential for hair regeneration and maintain tissue homeostasis, driving cyclic bouts of hair growth. HFSCs are self-renewing and differentiate into various cell types within the follicle and interfollicular epidermis during wound healing. Regulation involves Wnt/β-catenin, TGFβ/BMP, Notch, and Hedgehog signaling pathways. Dysfunction leads to impaired hair regeneration, making them attractive targets for treating alopecia or enhancing skin repair.
- Other names
- Bulge Stem CellHair Germ CellOuter Root Sheath Stem Cell
02
Mechanism of action
Modulation of HFSC activity via Wnt/β-catenin, TGFβ/BMP, Notch, or Hedgehog signaling pathways to promote hair growth or wound repair.
03
Biological functions
Self-renewalTissue regenerationWound healingDifferentiationHair follicle cycling (Anagen, Catagen, Telogen)Maintenance of tissue homeostasis
04
Disease associations
Androgenic AlopeciaHair loss disordersWound healing impairment
05
Safety considerations
Potential for uncontrolled proliferationOff-target effects on other stem cell populationsLimited understanding of long-term effects of HFSC manipulation
06
Biomarkers
Sox9 expressionK5/K14 expressionP-cadherin expression
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