research Loss of Dicer in Newborn Melanocytes Leads to Premature Hair Graying and Changes in Integrin Expression
This study found that stress-induced inactivation of the enzyme Dicer in melanocytes can cause premature hair greying by preventing proper melanocyte placement and melanin transfer in mice, suggesting the Dicer-miR92b-ItgaV pathway as an important link between stress and grey hair.