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Cellular retinol binding protein and breast carcinoma
European Journal of Cancer (Oxford, England : 1990)
|January 1, 1990
Summary
Cellular retinol binding protein (C-RBP) is found in most malignant breast tumors but not in non-malignant tissues. Higher C-RBP levels correlate with advanced stage IV disease, suggesting altered retinol metabolism in late-stage breast cancer.
Area of Science:
- Biochemistry
- Oncology
- Molecular Biology
Background:
- Cellular retinol binding protein (C-RBP) plays a role in retinol metabolism.
- Retinol and its derivatives are essential for various cellular functions, including cell growth and differentiation.
- Alterations in retinol metabolism have been implicated in cancer development and progression.
Purpose of the Study:
- To investigate the presence and levels of C-RBP in malignant and non-malignant breast tissues.
- To explore potential associations between C-RBP levels and clinicopathological features of breast cancer.
Main Methods:
- Quantification of C-RBP using sucrose density gradient ultracentrifugation.
- Analysis of C-RBP levels in 87 malignant and 18 non-malignant breast tissue samples.
- Correlation analysis with tumor steroid receptor status, patient obesity, menopausal status, and disease stage.
Main Results:
- C-RBP was detected in 70% of malignant breast tissues, but not in any non-malignant tissues.
- No significant association was found between C-RBP levels and steroid receptor status, obesity, or menopausal status.
- Significantly higher C-RBP levels were observed in stage IV breast cancer patients compared to stages II and III (P < 0.0001).
Conclusions:
- C-RBP is a potential biomarker for malignant breast tissue.
- Elevated C-RBP levels in advanced stage IV disease suggest a role in tumor progression and altered retinol mobilization.
- Further research is warranted to elucidate the precise role of C-RBP in breast cancer pathophysiology and its potential as a therapeutic target.