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Updated: Apr 25, 2026

A Three-dimensional Tissue Culture Model to Study Primary Human Bone Marrow and its Malignancies
Published on: March 8, 2014
Ameloblastin as a putative marker of specific bone compartments
Jaime Jacques1, Dominique Hotton, Audrey Asselin
1Laboratory of Molecular Oral Pathophysiology, INSERM UMRS 1138, Team Berdal, Cordeliers Research Center, Pierre and Marie Curie University - Paris 6, Paris Descartes University - Paris 5 , Paris , France .
Ameloblastin (AMBN) is present in mouse bone beyond enamel. Its mRNA expression varies by bone site, suggesting AMBN acts as a marker for specific bone organ characteristics.
Area of Science:
- Biochemistry
- Developmental Biology
- Genetics
Background:
- Ameloblastin (AMBN), an enamel matrix protein, is recognized for roles beyond enamel.
- The specific function of endogenous AMBN within bone tissue requires further investigation.
Purpose of the Study:
- To investigate the mRNA expression patterns of AMBN in wild-type mice across various bone sites and developmental stages.
Main Methods:
- Utilized laser capture microdissection for precise tissue analysis.
- Screened AMBN mRNA expression in mouse embryos (E10.5) and adult mice (15-week-old).
- Examined expression in multiple bone sites including mandible, frontal bone, tibia, and occipital bone.
Main Results:
- AMBN mRNA expression was detected early in mouse embryonic development (E10.5) in both head and body.
- Unambiguous AMBN mRNA expression was confirmed in mandible bone of 3-day-old mice.
- Adult mice showed site-specific AMBN mRNA expression, with higher levels in mandibular and frontal bones compared to tibia and occipital bones.
Conclusions:
- AMBN expression in bone is regulated in a site-specific manner.
- AMBN serves as a potential in vivo marker for the unique characteristics of specific bone organs.
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