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Enam expression is regulated by Msx2.

Intan Ruspita1,2, Pragnya Das1,3, Keiko Miyoshi4

  • 1Center for Regenerative and Developmental Biology, The Forsyth Institute, Cambridge, Massachusetts, USA.

Developmental Dynamics : an Official Publication of the American Association of Anatomists
|May 16, 2023
PubMed
Summary
This summary is machine-generated.

The major odontogenic transcription factor MSX2 directly represses enamelin (Enam) gene expression. This regulation is crucial for spatio-temporal control of enamel formation and biomineralization.

Keywords:
Msx2enamelintranscriptional regulation

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Area of Science:

  • Dental Biology
  • Molecular Biology
  • Genetics

Background:

  • Mineralized tissue formation in teeth, like enamel and dentin, depends on precise transcriptional control.
  • Enamelin (Enam) is the second most abundant enamel matrix protein.
  • Investigating Enam's transcriptional regulation by MSX2 is key to understanding amelogenesis.

Purpose of the Study:

  • To investigate the transcriptional regulation of the enamelin (Enam) gene.
  • To determine the role of the major odontogenic transcription factor MSX2 in Enam gene expression.

Main Methods:

  • In vitro and in vivo experimental approaches were utilized.
  • Analysis of Enam expression in Msx2 mouse mutants.
  • MSX2 binding assays to the Enam promoter.

Main Results:

  • Enam expression was reduced in Msx2 mutant mice during pre-secretory and secretory ameloblast stages.
  • Enam was identified as an early response gene directly regulated by MSX2.
  • MSX2 binds to the Enam promoter and represses its expression.

Conclusions:

  • MSX2 controls Enam gene expression in a spatio-temporal manner.
  • MSX2 directly targets the Enam gene.
  • MSX2 may collaborate with other factors to regulate amelogenesis and enamel biomineralization.