Promising New Hair Loss Treatment Using MicroRNA

​Breakthrough Hair Loss Treatment May Have Been Discovered Using MicroRNA

• Scientists say hair follicles become stiffer as we grow older, contributing to hair loss.
• However, a new study found that a type of microRNA helps to soften the follicles, aiding hair regrowth.
• Experts say this could lead to the development of a new treatment for baldness.
• More work is needed, however, since only mice studies have been done so far.

Male pattern baldness, a type of hereditary hair loss, is very common among men.

In fact, about two-thirds of men will experience an appreciable amount of hair loss by the time they reach age 35. And, by the age of 50, this figure rises to 85%. Additionally, a quarter of men will begin to have hair loss even before they are 21.
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Hair loss can be troubling for menTrusted Source with many reporting that their baldness makes them feel less attractive, depressed, or fearful of growing older.

Now, however, researchers say they may have found a promising new treatment for this often emotionally distressing condition.

According to the study authors, hair follicles become stiffer due to aging.

However, their study, which appears in the journal PNAS, found that softening hair follicle cells by increasing the production of a particular type of microRNA could aid in increasing hair growth and regeneration.

Tiny RNA particles may be the key to reversing baldness

According to board-certified cosmetic dermatologist Dr. Michele Green, who was not involved in the study, hair follicles have various stem cells that are responsible for the regulation of hair growth.

“This new study may have found a breakthrough in hair regeneration using small RNA particles or microRNA,” she explained.

“More specifically,” she noted, “miR-205 has been identified as an important microRNA that can potentially stimulate hair growth.”

Green said that RNA (ribonucleic acid) is present in all living cells. It acts as a messenger to carry instructions from our DNA to regulate protein production.

Hair follicles can become stiffer as we age, which, in turn, affects hair growth.

“In this study, researchers found that increasing the production of miR-205 softened the stem cells,” said Green. “By softening the hair follicle stem cells, hair growth increased in both young and old mice.”

The effect was fairly quick, as well. Green noted that there was increased hair growth after just ten days.

How this would be different from current baldness treatments

Dr. Ken L. Williams, Jr., a hair surgeon and founder of Orange County Hair Restoration in Irvine, CA, who was also not a part of the study, explained that current FDA-approved treatments for hair loss and thinning in both men and women include:

• minoxidil (Rogaine)
• finasteride (Propecia, Proscar)
• laser light therapy
• platelet-rich plasma (PRP)

“Hair restoration surgery is also a successful surgical decision for patients who meet criteria,” he added.

Green further explained that any treatment based on the current study would work via a different mechanism than what we currently have available.

“Minoxidil works by shortening the resting phase of the hair growth cycle and elongating the growth phase,” she said. “Minoxidil also reverses follicle miniaturization and stimulates circulation around the hair follicles.”

In the case of finasteride, it works by inhibiting DHT, which is a male hormone that is responsible for male pattern baldness. “Hair follicles are sensitive to hormonal changes and especially DHT,” she added.

Laser light therapyTrusted Source utilizes light in wavelengths ranging from red to infrared to stimulate tissue regeneration and repair.

Finally, she said, PRP involves injecting a concentration of platelets rich in growth factors, which improves the health of follicles, increases blood supply, and stimulates reparative cells.

What this could mean for the future of hair loss treatment

Williams said, “The final outcomes or medical translation of these types of data is always promising, but is impossible to determine so early after discovery.”

However, he noted that it is possible that a new treatment will be developed based on these findings.

Green additionally cautioned that the study was only performed on genetically engineered mice. More research is needed before we will know if this process will work in humans, she advised.

However, if a new treatment does come to fruition, it will “significantly advance hair restoration,” Green concluded, noting that she believes that researchers will probably look at a topical treatment that delivers microRNA directly into the skin.
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Williams said, however, that it is too early to know what type of delivery system will be created for miR-205, whether that would be a transdermal injection or an oral tablet.

from Healthline