The Transmembrane Protein LRIG1 Regulates Receptor Tyrosine Kinases in Skin Development and Homeostasis

In this study, researchers overexpressed Lrig3 in mouse skin and observed hair loss linked to changes in skin protein profiles and signaling pathways, suggesting a potential role for Lrig3 in maintaining skin homeostasis.

This study suggests that Lrig1-positive cells form a previously unknown reservoir of interfollicular epidermal stem cells in adult mouse skin, influencing epidermal proliferation and hair follicle development.

This study found that RXRα plays a critical role in hair cycling and keratinocyte functions in mice, likely through its interaction with VDR in epidermal cells.

This dissertation reports that Lrig1 and Lgr6 mark distinct stem cell populations in mouse hair follicles, playing roles in tissue regeneration and tumor development, with Lgr6 regulating Wnt signaling and restraining epidermal lineage commitment.

In this study, deleting the Igf1 receptor in specific skin cells of mice affected hair follicle cycling but not overall skin health, suggesting Igf1r's role in hair cycle regulation through Bmp-4 activation.