Thymic stromal lymphopoietin controls hair growth

Stem Cell Reports. 2022 Mar 8;17(3):649-663. doi: 10.1016/j.stemcr.2022.01.017. Epub 2022 Feb 24.

Abstract

Skin tissue regeneration after injury involves the production and integration of signals by stem cells residing in hair follicles (HFSCs). Much remains unknown about how specific wound-derived factors modulate stem cell contribution to hair growth. We demonstrate that thymic stromal lymphopoietin (TSLP) is produced in response to skin injury and during the anagen phase of the hair cycle. Intradermal injection of TSLP promoted wound-induced hair growth (WIHG), whereas neutralizing TSLP receptor (TSLPR) inhibited WIHG. Using flow cytometry and fluorescent immunostaining, we found that TSLP promoted proliferation of transit-amplifying cells. Lgr5CreER-mediated deletion of Tslpr in HFSCs inhibited both wound-induced and exogenous TSLP-induced hair growth. Our data highlight a novel function for TSLP in regulation of hair follicle activity during homeostasis and wound healing.

Keywords: TSLP; hair follicle; hair follicle stem cell; human; immunology; mouse; regeneration; tissue stem cell.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cytokines* / metabolism
  • Hair / metabolism
  • Receptors, Cytokine* / genetics
  • Receptors, Cytokine* / metabolism
  • Skin / metabolism
  • Thymic Stromal Lymphopoietin

Substances

  • Cytokines
  • Receptors, Cytokine
  • Thymic Stromal Lymphopoietin