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A quiescent cell population replenishes mesenchymal stem cells to drive accelerated growth in mouse incisors

Author

Listed:
  • Zhengwen An

    (Kings College London)

  • Maja Sabalic

    (Kings College London)

  • Ryan F. Bloomquist

    (Georgia Institute of Technology)

  • Teresa E. Fowler

    (Georgia Institute of Technology)

  • Todd Streelman

    (Georgia Institute of Technology)

  • Paul T Sharpe

    (Kings College London)

Abstract

The extent to which heterogeneity within mesenchymal stem cell (MSC) populations is related to function is not understood. Using the archetypal MSC in vitro surface marker, CD90/Thy1, here we show that 30% of the MSCs in the continuously growing mouse incisor express CD90/Thy1 and these cells give rise to 30% of the differentiated cell progeny during postnatal development. In adulthood, when growth rate homeostasis is established, the CD90/Thy1+ MSCs decrease dramatically in number. When adult incisors are cut, the growth rate increases to rapidly re-establish tooth length and homeostasis. This accelerated growth rate correlates with the re-appearance of CD90/Thy+ MSCs and re-establishment of their contribution to cell differentiation. A population of Celsr1+ quiescent cells becomes mitotic following clipping and replenishes the CD90/Thy1 population. A sub-population of MSCs thus exists in the mouse incisor, distinguished by expression of CD90/Thy1 that plays a specific role only during periods of increased growth rate.

Suggested Citation

  • Zhengwen An & Maja Sabalic & Ryan F. Bloomquist & Teresa E. Fowler & Todd Streelman & Paul T Sharpe, 2018. "A quiescent cell population replenishes mesenchymal stem cells to drive accelerated growth in mouse incisors," Nature Communications, Nature, vol. 9(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-017-02785-6
    DOI: 10.1038/s41467-017-02785-6
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    Cited by:

    1. Elle Koren & Alona Feldman & Marianna Yusupova & Avihay Kadosh & Egor Sedov & Roi Ankawa & Yahav Yosefzon & Waseem Nasser & Stefanie Gerstberger & Liam B. Kimel & Noa Priselac & Samara Brown & Sam Sha, 2022. "Thy1 marks a distinct population of slow-cycling stem cells in the mouse epidermis," Nature Communications, Nature, vol. 13(1), pages 1-16, December.

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