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Transferrin receptor expression in non-malignant and malignant human breast tissue
The Journal of Pathology
|March 1, 1986
Summary
Transferrin receptor is present in normal, pregnant, and benign breast tissues, as well as all examined breast carcinomas. Its expression in cancer did not correlate with tumor characteristics, suggesting roles beyond cell proliferation.
Area of Science:
- Immunohistochemistry
- Oncology
- Cell Biology
Background:
- Transferrin receptor (TfR) is crucial for cell growth.
- Previous studies suggested TfR expression is limited to malignant breast tissue.
Purpose of the Study:
- To investigate TfR expression in normal, pregnant, benign hyperplastic, and malignant breast lesions.
- To compare TfR expression patterns using two monoclonal antibodies.
Main Methods:
- Immunohistochemical analysis of breast tissue samples.
- Utilized two distinct monoclonal antibodies targeting the transferrin receptor.
Main Results:
- Transferrin receptor detected in normal, pregnant, benign hyperplastic breast lesions, and all examined breast carcinomas.
- Carcinomas showed variable reactivity, with most cells stained in 70% of cases.
- No correlation found between TfR expression extent and tumor differentiation or local spread.
Conclusions:
- Transferrin receptor expression is not exclusive to malignant breast tissue.
- TfR's role in breast carcinomas may extend beyond cell proliferation.
- Antibody-specific staining differences highlight the complex nature of TfR.