TLDR Hairless protein can block vitamin D activation in skin cells.
The study concluded that the Hairless (HR) protein suppressed the transactivation activity of the Vitamin D Receptor (VDR) in human keratinocytes by acting as a corepressor. This suppression inhibited the expression of VDR target genes, which are crucial for hair growth and skin health. The interaction between HR and VDR was shown to be significant in maintaining proper hair follicle function and skin homeostasis, suggesting that mutations in the HR gene could lead to hair loss disorders such as alopecia.
140 citations,
April 2004 in “The journal of investigative dermatology/Journal of investigative dermatology” The enzyme 25 Hydroxyvitamin D 1 α-Hydroxylase is essential for healthy skin and recovery after skin damage.
40 citations,
October 2002 in “Endocrinology” Vitamin D3 analogs can promote hair growth in mice genetically prone to hair loss.
57 citations,
April 2002 in “The journal of investigative dermatology/Journal of investigative dermatology” Vitamin D receptor is crucial for starting hair growth after birth.
180 citations,
January 2002 in “The journal of investigative dermatology/Journal of investigative dermatology” Vitamin D Receptor is crucial for normal skin and hair growth.
139 citations,
September 2001 in “The journal of investigative dermatology/Journal of investigative dermatology” Mutations in the Vitamin D receptor gene can cause hair loss similar to mutations in the Hairless gene.
126 citations,
October 1998 in “Experimental Dermatology” 53 citations,
October 1998 in “The journal of investigative dermatology/Journal of investigative dermatology” Topical calcitriol-analogs can reduce hair loss caused by chemotherapy.
28 citations,
January 2012 in “Biological & pharmaceutical bulletin” Hairless protein can both repress and activate vitamin D receptor functions, affecting gene regulation.
62 citations,
January 2009 in “Biochemistry” Vitamin D receptor binds similarly to natural and synthetic ligands, affecting gene regulation.
78 citations,
November 2005 in “Endocrinology” Hairless protein can block vitamin D activation in skin cells.
