Changes in expression of o6/P4 integrin heterodimer in primary and metastatic breast cancer
1992
Changes in integrin expression in breast cancer
publication
Author Information
Author(s): P.G. Natali, M.R. Nicotra, C. Botti, M. Mottolese, A. Bigotti, O. Segatto
Primary Institution: Regina Elena Cancer Institute
Hypothesis
The study investigates whether the expression of the a6/P4 integrin complex is altered in human breast tumors.
Conclusion
The study found that loss of basement membrane components is associated with changes in the expression of the a6/P4 integrin complex in breast cancer.
Supporting Evidence
- The a6 and P4 subunits colocalize at the basolateral aspect of the epithelium in normal breast tissue.
- In benign breast lesions, the distribution pattern of a6 and P4 remains mostly unchanged.
- In primary carcinomas, the expression of both chains is either redistributed or significantly reduced.
- In metastatic lesions, the expression of the heterodimer is maintained in most lymphonodal foci.
Takeaway
In breast cancer, the way certain proteins are expressed changes when the basement membrane is missing, which might help the cancer spread.
Methodology
The study involved immunohistochemical analysis of surgical biopsies from normal, benign, and malignant breast tissues.
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