Premature Osteoblast Clustering by Enamel Matrix Proteins Induces Osteoblast Differentiation through Up-Regulation of Connexin 43 and N-Cadherin
2011

Enamel Matrix Proteins and Osteoblast Differentiation

publication Evidence: moderate

Author Information

Author(s): Miron Richard J., Hedbom Erik, Ruggiero Sabrina, Bosshardt Dieter D., Zhang Yufeng, Mauth Corinna, Gemperli Anja C., Iizuka Tateyuki, Buser Daniel, Sculean Anton

Primary Institution: University of Bern, Bern, Switzerland

Hypothesis

The study aims to evaluate the influence of enamel matrix proteins on osteoblast cell-cell communication and adhesion molecules.

Conclusion

Enamel matrix proteins significantly enhance osteoblast differentiation and mineralization through the up-regulation of connexin 43 and N-cadherin.

Supporting Evidence

  • EMD significantly increased the expression of connexin 43 and N-cadherin at early time points.
  • Alkaline phosphatase activity was significantly increased on EMD-coated samples.
  • EMD significantly increased extracellular mineral deposition in cell clusters.

Takeaway

This study shows that a special protein from teeth helps bone cells stick together and grow better, which is important for healing bones.

Methodology

The study used immunofluorescence imaging, real-time PCR, and Western blot analysis to assess the effects of enamel matrix proteins on osteoblasts.

Statistical Information

Statistical Significance

p<0.05

Digital Object Identifier (DOI)

10.1371/journal.pone.0023375

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