The solution worked in mice both young and old.
They used advanced microscopy tools, including atomic force microscopy, to measure the hair’s stiffness.
“They started to grow hair in 10 days,” said corresponding author Rui Yi, the Paul E. Steiner Research Professor of Pathology and professor of dermatology at Northwestern University Feinberg School of Medicine. “These are not new stem cells being generated. We are stimulating the existing stem cells to grow hair. We often still have stem cells, but they may not be able to generate the hair.“Our study demonstrates the possibility of stimulating hair growth by regulating cell mechanics. Because of the potential to deliver microRNA by nanoparticles directly into the skin, next, we will test whether topically delivered miR-205 can stimulate hair growth first in mice.
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