Research team shows skin stem cells run by circadian clock

(PhysOrg.com) -- Most everyone has heard of the circadian rhythm or the internal clock that people have that tells them when to do things, such as go to sleep. In fact, researchers have actually located where this “clock” resides in the human brain. It’s in the suprachiasmatic nuclei, a pair of distinct groups of cells located in the hypothalamus. So, that would seem the end of it right, except it’s not; new research by a group in Spain has found that individual stem cells in skin have their own circadian clock of sorts that tells the skin when to do certain thing, like regenerate. The team led by Peggy Janich and Salvador Aznar Benitah, has published the results of their study in Nature.

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