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Ep-CAM (MOC-31) expression in tooth germ and ameloblastoma.
N Derderian1, V Pereira-Prado, M Hernandez
1Molecular Pathology, School of Dentistry Universidad de la República (UDELAR) Las Heras 1925, Montevideo 14600, Uruguay ronellbologna@odon.edu.uy.
Medicina Oral, Patologia Oral Y Cirugia Bucal
|August 17, 2022
Summary
EpCAM protein is highly expressed in tooth germs and ameloblastic carcinoma but less so in ameloblastoma. Further research is needed to understand the biological significance of EpCAM in oral neoplasia.
Area of Science:
- Oral Pathology
- Oncology
- Molecular Biology
Background:
- Epithelial cell adhesion molecule (Ep-CAM) plays roles in cell adhesion, proliferation, and signaling.
- Ep-CAM is overexpressed in many cancers, aiding tumor initiation and metastasis.
- Ep-CAM's role in oral neoplasia, especially odontogenic tumors, is not well understood.
Purpose of the Study:
- To analyze Ep-CAM expression in ameloblastoma and tooth germ.
- To investigate the potential role of Ep-CAM in odontogenic tumors.
Main Methods:
- Immunohistochemistry was used to evaluate Ep-CAM (MOC-31) expression.
- Samples included 16 tooth germs (TG), 60 ameloblastomas (AM), and 2 ameloblastic carcinomas.
- Positivity was graded semi-quantitatively based on the percentage of stained cells.
Main Results:
- 81.3% of tooth germs showed MOC-31 expression, particularly in the enamel organ and stellate reticulum.
- 16.7% of ameloblastomas exhibited diffuse MOC-31 expression.
- Ameloblastic carcinomas were strongly positive for MOC-31; no correlation with patient demographics or tumor subtypes was found.
Conclusions:
- Ep-CAM was overexpressed in tooth germs and ameloblastic carcinoma compared to ameloblastoma.
- Further studies are recommended to elucidate the biological significance of Ep-CAM in these conditions.
