Noisette
Established Member
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Hi guys 
Just before the 10th World Congress for Hair Research, Takashi Tsuji and Koh-ei Toyoshima have published a new article in the journal Proceedings of the National Academy of Sciences this October 2017.
TITLE
" Requirement of zinc transporter ZIP10 for epidermal development: Implication of the ZIP10–p63 axis in epithelial homeostasis"
Significance
Although the epidermis of the skin is the first tissue to manifest a zinc deficiency, the mechanisms underlying zinc-mediated epidermal formation are largely unknown. We demonstrated that the zinc transporter ZIP10, which is highly expressed in the outer root shelf of hair follicles, is essential for epidermal formation. Ablating Zip10 caused epidermal hypoplasia by down-regulating the transcriptional activity of p63, whereas ZIP10-mediated zinc influx promoted p63 transactivation to induce epidermal morphogenesis. Our results establish the physiological relevance of ZIP10 in epidermal development.
Abstract
Skin tissues, in particular the epidermis, are severely affected by zinc deficiency. However, the zinc-mediated mechanisms that maintain the cells that form the epidermis have not been established. Here, we report that the zinc transporter ZIP10 is highly expressed in the outer root sheath of hair follicles and plays critical roles in epidermal development. We found that ZIP10 marked epidermal progenitor cell subsets and that ablating Zip10 caused significant epidermal hypoplasia accompanied by down-regulation of the transactivation of p63, a master regulator of epidermal progenitor cell proliferation and differentiation. Both ZIP10 and p63 are significantly increased during epidermal development, in which ZIP10-mediated zinc influx promotes p63 transactivation. Collectively, these results indicate that ZIP10 plays important roles in epidermal development via, at least in part, the ZIP10–zinc–p63 signaling axis, thereby highlighting the physiological significance of zinc regulation in the maintenance of skin epidermis.
Just before the 10th World Congress for Hair Research, Takashi Tsuji and Koh-ei Toyoshima have published a new article in the journal Proceedings of the National Academy of Sciences this October 2017.
TITLE
" Requirement of zinc transporter ZIP10 for epidermal development: Implication of the ZIP10–p63 axis in epithelial homeostasis"
Significance
Although the epidermis of the skin is the first tissue to manifest a zinc deficiency, the mechanisms underlying zinc-mediated epidermal formation are largely unknown. We demonstrated that the zinc transporter ZIP10, which is highly expressed in the outer root shelf of hair follicles, is essential for epidermal formation. Ablating Zip10 caused epidermal hypoplasia by down-regulating the transcriptional activity of p63, whereas ZIP10-mediated zinc influx promoted p63 transactivation to induce epidermal morphogenesis. Our results establish the physiological relevance of ZIP10 in epidermal development.
Abstract
Skin tissues, in particular the epidermis, are severely affected by zinc deficiency. However, the zinc-mediated mechanisms that maintain the cells that form the epidermis have not been established. Here, we report that the zinc transporter ZIP10 is highly expressed in the outer root sheath of hair follicles and plays critical roles in epidermal development. We found that ZIP10 marked epidermal progenitor cell subsets and that ablating Zip10 caused significant epidermal hypoplasia accompanied by down-regulation of the transactivation of p63, a master regulator of epidermal progenitor cell proliferation and differentiation. Both ZIP10 and p63 are significantly increased during epidermal development, in which ZIP10-mediated zinc influx promotes p63 transactivation. Collectively, these results indicate that ZIP10 plays important roles in epidermal development via, at least in part, the ZIP10–zinc–p63 signaling axis, thereby highlighting the physiological significance of zinc regulation in the maintenance of skin epidermis.
