- Reaction score
- 243
Interesting new article.
https://www.hairlosscure2020.com/the-sonic-hedgehog-pathway-an-unrealized-dream/
On November 21st 2018, an important new study related to the Sonic Hedgehog (Shh) pathway and hair growth in mice was published in Nature Communications:
“Hedgehog stimulates hair follicle neogenesis by creating inductive dermis during murine skin wound healing.”
The lead author of this study is the famous Dr. Mayumi Ito, who I have covered numerous times on this blog. The research was led by Dr. Ito and her team from the NYU School of Medicine. Other well known co-authors include Dr. George Cotsarelis, Dr. Maksim Plikus and Dr. Sarah Millar.
For some reason, a number of newspapers around the world only covered these results a week after publication. Even Dr. Ito’s own university only discussed the findings on November 28th. More here.
The study authors claim to have shown that activation of the Sonic hedgehog (Shh) pathway regenerates dermal papilla cells, which in turn ensures hair follicle neogenesis. This was done on wounded and damaged skin that was previously unable to grow hair.
Moreover, the authors have found a way to prevent cancerous tumor growth upon Shh pathway activation:
“To bypass the risk of tumors reported in other experiments that turned on the sonic hedgehog pathway, the NYU Langone team turned on only fibroblasts located just beneath the skin’s surface where hair follicle roots (dermal papillae) first appear.”
The study also has some very interesting discussion about the interplay with Shh signaling and Wnt signaling (and activation).
This was something I wanted to discuss. The entire premise of wounding and hair neogenesis is that there is a window which we need to take advantage of. I'm happy to read this because this tumor problem was big one.