Abstract
Chronic and acute stress caused by emotional or physical insults can affect the function of other organs via the brain-body axis. As one of the smallest organs in mammalian, hair follicles are highly susceptible to stress. Under stress, the sympathetic nerves release norepinephrine (NA), which acts directly on the β-2 adrenergic receptors on melanocyte stem cells (MeSCs) within the hair follicles, causing the MeSCs to lose quiescence and enter a rapid proliferation state followed by differentiation and migration, leading to rapid loss of MeSCs and, ultimately, grey hair. Here, we screened out β-2 blockers forming the ZINC 15 compound database, found a natural product isoliensinine, and was effective in preventing stress-induced hair greying in mice. The study sheds light on the development of products that use natural compounds to prevent stress-induced hair greying.
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