King’s College study a “step closer to natural repair of teeth”

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King’s College London study on activating stem cell growth a “step closer” to natural repair of teeth

Stem cells provide renewable sources of cells in many adult tissues, enabling tissue growth and repair. But what happens when the stem cells themselves become depleted, or the tissue needs to go through periods of more rapid growth?

A recent study by researchers at King’s College London’s Dental Institute have showed that in growing teeth, a tiny population of cells act as an emergency reservoir and these can provide new stem cells during rapid tooth growth. The study has been published in Nature Communications.

The team, led by Professor Paul Sharpe, found that these normally quiescent cells become activated at times when the tooth needs a growth spurt. They generate a specific population of stem cells that provide the extra cells needed for the increase in growth rate.

The research has implications for understanding how stem cells behave and which cell populations may need to be targeted in clinical therapies. By knowing which stem cells to activate to encourage rapid growth, the research takes another step towards enabling the natural repair of teeth.

Notes: “A quiescent cell population replenishes mesenchymal stem cells to drive accelerated growth in mouse incisors” has been published in Nature Communications today (25th January 2018).

Professor Paul Sharpe is the Head of the Centre of Craniofacial and Regenerative Biology at King’s College London Dental Institute.

Image caption: Stem cells dividing in the tooth (red) and differentiating into specialised tooth cells, odontoblasts (green) and tooth pulp cells.