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Parathyroid hormone receptor signalling in osterix-expressing mesenchymal progenitors is essential for tooth root formation

Author

Listed:
  • Wanida Ono

    (Endocrine Unit, Massachusetts General Hospital and Harvard Medical School
    University of Michigan School of Dentistry)

  • Naoko Sakagami

    (University of Michigan School of Dentistry)

  • Shigeki Nishimori

    (Endocrine Unit, Massachusetts General Hospital and Harvard Medical School)

  • Noriaki Ono

    (Endocrine Unit, Massachusetts General Hospital and Harvard Medical School
    University of Michigan School of Dentistry)

  • Henry M. Kronenberg

    (Endocrine Unit, Massachusetts General Hospital and Harvard Medical School)

Abstract

Dental root formation is a dynamic process in which mesenchymal cells migrate toward the site of the future root, differentiate and secrete dentin and cementum. However, the identities of dental mesenchymal progenitors are largely unknown. Here we show that cells expressing osterix are mesenchymal progenitors contributing to all relevant cell types during morphogenesis. The majority of cells expressing parathyroid hormone-related peptide (PTHrP) are in the dental follicle and on the root surface, and deletion of its receptor (PPR) in these progenitors leads to failure of eruption and significantly truncated roots lacking periodontal ligaments. The PPR-deficient progenitors exhibit accelerated cementoblast differentiation with upregulation of nuclear factor I/C (Nfic). Deletion of histone deacetylase-4 (HDAC4) partially recapitulates the PPR deletion root phenotype. These findings indicate that PPR signalling in dental mesenchymal progenitors is essential for tooth root formation, underscoring importance of the PTHrP–PPR system during root morphogenesis and tooth eruption.

Suggested Citation

  • Wanida Ono & Naoko Sakagami & Shigeki Nishimori & Noriaki Ono & Henry M. Kronenberg, 2016. "Parathyroid hormone receptor signalling in osterix-expressing mesenchymal progenitors is essential for tooth root formation," Nature Communications, Nature, vol. 7(1), pages 1-16, September.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms11277
    DOI: 10.1038/ncomms11277
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    Cited by:

    1. Junjun Jing & Jifan Feng & Yuan Yuan & Tingwei Guo & Jie Lei & Fei Pei & Thach-Vu Ho & Yang Chai, 2022. "Spatiotemporal single-cell regulatory atlas reveals neural crest lineage diversification and cellular function during tooth morphogenesis," Nature Communications, Nature, vol. 13(1), pages 1-14, December.

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