Cell and Tissue Research

, Volume 280, Issue 2, pp 283–290 | Cite as

The expression of the gene coding for parathyroid hormone-related protein (PTHrP) during tooth development in the rat

  • F. Beck
  • J. Tucci
  • A. Russell
  • P. V. Senior
  • M. W. J. Ferguson


By means of in situ hybridisation studies, it is shown that parathyroid hormone-related protein (PTHrP) mRNA is strongly expressed in the developing enamel organs of rat teeth. In particular, the cervical loop hybridises strongly with the PTHrP probe and expression is maintained at this site throughout life in the permanently erupting incisor teeth. In mature molar teeth, expression is downregulated to low levels and confined to the epithelial cell rests of Malassez and/or cementoblasts which may derive from these. The gene is also expressed at low levels in the tissue overlying the erupting molars and, thereafter, in the junctional epithelia and connective tissue cells of the epithelial attachment on all tooth surfaces. The premise that PTHrP may undergo post-translational processing and that the resultant products could act in different ways raises the possibility of its exerting multiple paracrine actions during tooth development. These could include the control of cell division and local vascular dilation during development.

Key words

Parathyroid hormone-related protein (PTHrP) Teeth In situ hybridization Rat (Sprague Dawley) 


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Copyright information

© Springer-Verlag 1995

Authors and Affiliations

  • F. Beck
    • 1
  • J. Tucci
    • 1
  • A. Russell
    • 1
  • P. V. Senior
    • 1
  • M. W. J. Ferguson
    • 2
  1. 1.Howard Florey Institute of Experimental Physiology and MedicineUniversity of MelbourneParkvilleAustralia
  2. 2.School of Biological SciencesUniversity of ManchesterManchesterUK

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