There Are Cells Inside Teeth That Can Turn Back Into Stem Cells
Inside each of our hard, calcified
Teeth are connected to nerves, as anyone who's had the misfortune of a toothache would know. Igor Adameyko of the Karolinska Institute in Stockholm and his team were studying glial cells, which support and protect neurons, in mice. By fluorescently labeling these glial cells, they could track the fate of these cells over time.
What they found was entirely surprising. Glial cells from nerves in the gums actually migrated into teeth, where they turned into mesenchymal stem cells and eventually into tooth cells. Stem cells differentiating into specific cells is to be expected, but glial cells turning into stem cells is the exact opposite of what we thought we knew.
The study published in Nature is definitely exciting, but it will of course need to be confirmed with follow-up studies. It's possible we may have a new source for stem cells-right in our mouths. [ Science ]
Top image: Dmitry G/Wikimedia Commons
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