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Researchers at North Carolina State University have identified a microRNA

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They released exosomes rich in miR-218-5p, a microRNA that amplifies a crucial growth pathway for hair follicles. When levels of this molecule increased, hair follicles became more active. When it was blocked, hair growth slowed or stopped entirely.

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Cheng said. “MiRNAs, on the other hand, can be utilized in small molecule-based drugs. So potentially you could create a cream or lotion that has a similar effect with many fewer problems. Future studies will focus on using just this miRNA to promote hair growth.”

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the team identified mitochondrial transfer as a key mechanism of immune evasion. This study was published online in Nature on January 22, 2025.

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Mitochondria carry their own DNA (mtDNA), which encodes proteins crucial for energy production and transfer. However, mtDNA is prone to damage, and mutations in mtDNA can promote tumor growth and metastasis. In this study, the researchers examined TILs from patients with cancer and found that they contained the same mtDNA mutations as the cancer cells.

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Some of the studied hormones, moreover, have astonishing and unexpected biological effects on skin function and hair aging as highlighted by distinct genetic deficiency syndromes.