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E-cadherin expression in normal, hyperplastic and malignant oral epithelium.
1Department of Oral Pathology, Institute of Dental Surgery, 256 Gray's Inn Road, London WC1X 8LD, U.K.
European Journal of Cancer. Part B, Oral Oncology
|October 1, 1993
Summary
E-cadherin expression is altered in oral squamous cell carcinoma, with heterogeneous staining and areas of loss observed. This suggests E-cadherin loss may be crucial for tumor invasion, not initial malignancy.
Area of Science:
- Oral pathology
- Molecular biology
- Cancer research
Background:
- E-cadherin is vital for epithelial cell adhesion and tissue integrity.
- Its role in oral epithelium and cancer requires further investigation.
Purpose of the Study:
- To investigate E-cadherin expression in normal, hyperplastic, and malignant oral epithelium.
- To correlate E-cadherin expression patterns with tumor differentiation and invasiveness.
Main Methods:
- Immunohistochemical staining using a monoclonal antibody against E-cadherin.
- Analysis of 10 normal, 5 hyperplastic, and 15 squamous cell carcinoma oral tissue specimens.
Main Results:
- Normal and hyperplastic oral epithelium showed strong E-cadherin staining.
- Squamous cell carcinomas exhibited heterogeneous staining with areas of E-cadherin loss or fragmentation.
- No correlation was found between E-cadherin expression and keratinization or tumor differentiation.
Conclusions:
- Loss of E-cadherin is not essential for oral cancer development but may play a role in tumor invasion.
- E-cadherin's potential function as a tumor suppressor gene in oral cancer progression is supported.