small RNA molecule regulating gene expression and hair growth
miR-222 is a type of microRNA, which are small molecules that help regulate gene expression in cells. Specifically, miR-222 has been found to play a role in various biological processes, including cell growth, differentiation, and apoptosis (programmed cell death). In the context of hair and alopecia, miR-222 can influence hair follicle cycling and has been implicated in conditions like androgenetic alopecia, where it may contribute to hair loss by affecting the growth phase of hair follicles.
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