High level expression of differentially localized BAG-1 isoforms in some oestrogen receptor-positive human breast cancers
1999
BAG-1 and Breast Cancer
publication
Evidence: moderate
Author Information
Author(s): Brimmell M, Burns J S, Munson P, McDonald L, O’Hare M J, Lakhani S R, Packham G
Primary Institution: Ludwig Institute for Cancer Research, Imperial College of Medicine
Hypothesis
The study investigates the expression of BAG-1 isoforms in relation to estrogen receptor status in breast cancer.
Conclusion
BAG-1 expression is closely associated with estrogen receptor positivity in breast cancer and may serve as a therapeutic target or prognostic marker.
Supporting Evidence
- BAG-1 was detected in normal breast epithelial cells and most ER-positive tumors.
- BAG-1 expression was independent of oestrogens.
- BAG-1 positive cells showed a predominantly cytoplasmic or cytoplasmic plus nuclear distribution.
Takeaway
BAG-1 is a protein that helps cancer cells survive, and its presence in breast cancer cells can indicate how the cancer might behave.
Methodology
The study used immunostaining to analyze BAG-1 expression in breast cancer tissues and cell lines.
Digital Object Identifier (DOI)
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