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Related Experiment Videos

Albumin gene expression during mouse odontogenesis

Z A Yuan1, K S McAndrew, P M Collier

  • 1Department of Anatomy and Histology, School of Dental Medicine, University of Pennsylvania, Philadelphia 19104, USA.

Advances in Dental Research
|November 1, 1996
PubMed
Summary

Albumin protein is found in developing teeth. However, messenger RNA (mRNA) for albumin was detected in periodontal tissue, not tooth cells, indicating it

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Area of Science:

  • Biochemistry
  • Developmental Biology
  • Oral Biology

Background:

  • Albumin protein has been observed in the developing teeth of various species.
  • The precise origin of albumin within developing dental tissues remains unclear.

Purpose of the Study:

  • To investigate the cellular source of albumin protein in developing teeth.
  • To determine if albumin messenger RNA (mRNA) is expressed within tooth cells.

Main Methods:

  • Designed oligomer primers for Reverse Transcription Polymerase Chain Reaction (RT-PCR) to detect albumin mRNA.
  • Created complementary RNA (cRNA) probes for in situ hybridization to localize albumin mRNA expression.
  • Performed RT-PCR and in situ hybridization on developing mouse teeth tissues.

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Main Results:

  • In situ hybridization did not detect albumin mRNA expression in any tooth cells.
  • Albumin mRNA was successfully amplified via RT-PCR from tissues attached to the roots of developing teeth in four-week-old mice.
  • The expression of albumin mRNA was localized to the periodontal tissue.

Conclusions:

  • The periodontal tissue, not the tooth cells themselves, is the source of albumin mRNA detected near developing teeth.
  • Periodontal tissue is unlikely to be the primary source of albumin protein found in developing enamel due to expression levels and location.