Category Archives: Wounding

Wounding, Interleukin-1 and Other Hair News

There were way too many developments in the past month, at least half of which probably deserved their own post.

Wounding, Interleukin-1 (IL-1) and γδ T-cells

Wounding induced hair growth has been in the news a lot over the past several years.

At the end of 2013, I first discussed Dr. Krzysztof Kobielak and Dr. Eve Kandyba from USC in relation to their work on how the Wnt7 gene activates hair growth. Fast forward to this month, and both scientists are back in the news and (via a collaboration with researchers from UC San Diego and from India) published an important paper titled: “Stimulation of hair follicle stem cell proliferation through an IL-1 dependent activation of γδT-cells“.

Interestingly, one of the three most important words used throughout the paper and of primary importance to us (“wounding” or “wound“) is missing from the above title, although not from the complementing photo (see red area in the image further below).

These scientists found that wounding triggers interleukin-1 (IL-1), which in turn activates certain immune cells (called γδT-cells or gamma delta cells). These immune cells then awaken resting stem cells in the hair follicle so that they can then “multiply and travel to the wound site to repair the injury”. For our purposes, the hair follicle stem cell activation is more important than any kind of wound repair (i.e., hair > scar improvement).

Commentator “Omg” who has posted some great material in recent weeks (including the above — thanks) wrote that this finding is the biggest discovery of the past decade. I am not so sure. Note that the authors of this latest work are not affiliated with Follica (the widely discussed company that is developing a “wounding + favorable compound injection” related procedure to regrow hair); nor are they affiliated with Dr. Rachita Dhurat, who has published several groundbreaking papers related to wounding and hair growth. Makes this discovery from an entirely different group all the more exciting, and further validates the potential of wounding spurred hair regrowth.

Wounding, Interleukin-1 and Hair Growth

Nanogel Encapsulated Dermal Papilla 3D Spheroids and Hair Follicle Regeneration

In 2015 I interviewed Dr. Malcolm Xing from Canada. In 2016, I discussed the same doctor’s new findings related to a novel improved “hanging drop” 3D cell culturing technique for the purpose of hair growth. Dr. Xing has constantly been trying to improve upon the renowned Dr. Colin Jahoda’s work.

This month, Dr. Xing and a team from China have published a new paper titled “Bottom-up Nanoencapsulation from Single Cells to Tunable and Scalable Cellular Spheroids for Hair Follicle Regeneration“.

I am not motivated enough to try to make the sci-hub site work to gain free access to this whole paper. I am, however, in no doubt that any new development related to 3D spheroids and hair culturing is of utmost importance and warrants coverage on this blog.

More Good News from Aclaris

In November, I discovered an interview in which Aclaris Therapeutics’ chief scientific officer mentioned that in the  first half of 2018, Aclaris planned to commence phase 2 trials to treat androgenetic alopecia (male pattern hair loss) with topical JAK inhibitors. This was a huge development, since we are used to virtually all companies in the hair loss world postponing or delaying clinical trials. In contrast, Aclaris is doing the opposite and moving to phase 2 trials without even having done phase 1 trials! They probably got to skip phase 1 trials because they have tested the same JAK inhibitors (including oral and topical versions) for other conditions.

Several weeks after I posted the above pleasing development, Aclaris announced at an investor conference that they would start the above trials at the end of the first quarter of next year (i.e, end of March 2018). Yet again they surprise us with their speed, and do not want to wait will June 2018. The announcement can be accessed by going to their website and finding their latest investor conference presentations (often available in both audio and slide formats).

Thanks to “Royaume” who listened to the whole audio for us (albeit misinterpreted its favorable implication). Commentator “Malcolm” even felt like I should have devoted a whole post to this news, but I did not want to do so less than a month after my prior post on Aclaris. Moreover, past experiences make me think that Aclaris will delay its trial commencement target dates (like all other companies seem to do), although I hope I am wrong.

Replicel CEO Update

Replicel’s CEO was interviewed by “Investing News” towards the end of last month. Key quote:

“There’s a possibility… that [our] hair products could have an early launch in Japan. Our partner Shiseido is funding a clinical trial in Japan that’s expected to release clinical data next year. It’s entirely up to Shiseido what they do in regards to this product. There’s certainly a possibility that they could decide if the data is positive, to launch the product in Japan and that would trigger… milestone payments and sales royalty revenue”.

Other Items of Interest

— I saw a number of comments and received several e-mails regarding the Brotzu lotion. It seems like they updated their EU patent page and several Italian hair loss forum members are claiming that the product is coming out in early 2018. For the time being I will refrain from writing a post on this, as it seems like there is a lot of speculation going on.

— A great thread with before and after photos on Reddit about the power of  the “Big 3” treatment of Finasteride plus Minoxidil plus Nizoral when effective.

PolarityTE starts using its SkinTE product on humans. No info yet on potential hair growth effects on the scalp, but still great to see usage in humans rather than mice so early in the process. Key quote:

“We are confident and believe that SkinTE will replicate its preclinical success and help patients regenerate their own full-thickness, hair-bearing skin”.

Microneedling via a Dermaroller and Minoxidil

There is increasing evidence that dermarolling benefits hair growth. Microneedling via the use of a dermaroller is often being conducted to enhance the absorption of topical hair loss products such as Minoxidil (Rogaine).

Creative and intelligent hair loss forum members are also experimenting with the addition of prostaglandin D2 (PGD2) inhibitors and prostaglandin E2 (PGE2) to this mix.

The logic behind these experiments is related to the wounding and resulting hair regrowth that a company called Follica is attempting.

Microneedling Enhances Effectiveness of Minoxidil

Moreover, a recent study concluded an enhanced positive effect of Minoxidil when used in combination with microneedling. The wounding was conducted via the use of a dermaroller device.

Microneedling Minoxidil Hair Growth Before After.The dermaroller had 1.5 mm sized needles and was rolled over scalps. Before and after microneedling photos are shown on the right and below.

This study provides further impetus towards the excitement surrounding this unique concept of wounding and hair growth.

I myself have seen decent results from applying Minoxidil to my scalp for a number of years. I may try dermarolling in the future, although I will have to conduct significant research regarding needle depth and equipment recommendations.

Dermarolling for Hair Growth Experiments

Dermaroller 1.5 mm for Hair Growth.I will elaborate on this subject in more detail in future posts.

For now, I encourage readers to go through the following massive threads on some of the main hair loss forums out there in order to gauge the excitement around this issue.

The baldtruthtalk forum thread on dermarolling and minoxidil

The hairlosstalk forum thread on dermarolling and minoxidil

The hairlosshelp forum thread on dermarolling and minoxidil

Wounding and Hair Regeneration

Over the years, wounding has developed a solid reputation in both medical and cosmetic fields. Research on wounding and hair regeneration is progressing rapidly. For example, a 2018 study found wounding induced hair follicle neogenesis in an elderly patient. Hopefully this can be replicated on a larger scale across balding scalps.