Abstract
Purpose
Galectin-3 expression is modulated in cancer cells, and that finding has led to the recognition of galectin-3 as a diagnostic or prognostic marker for various cancers, including breast cancer. This study investigated the correlation between galectin-3 expression and the clinicopathological features in patients with breast cancer, in order to determine the relevance and role of galectin-3 in breast cancer progression.
Methods
Galectin-3 expression was investigated immunohistochemically in 116 patients with breast cancer, and a statistical analysis was performed.
Results
Galectin-3 expression in breast cancer was significantly associated with tumor vascular invasion. However, galectin-3 expression was not associated with Ki-67 expression, which reflects tumor proliferation. Disease-free survival and long-term overall survival were significantly shorter for patients with reduced galectin-3 expression.
Conclusions
This study demonstrated that the galectin-3 expression was associated with tumor vascular invasion and metastasis, suggesting that galectin-3 plays a critical role in tumor progression via an invasive mechanism but not via proliferation in breast cancer. Furthermore, reduced expression of galectin-3 is useful for predicting a long-term poor prognosis in patients with breast cancer.
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Acknowledgments
The authors gratefully thank Prof. Avraham Raz for kindly providing us with the anti-galectin-3 antibody. The authors would like to thank Saitoh Y, Yano T, Ohno M, Matsui Y and Muraoka S for their secretarial assistance. This work was supported in part by Grants-in-Aid from the Japanese Ministry of Education, Culture, Sports, Science, and Technology (T.F.).
Conflict of interest
The authors declare that they have no competing financial interests.
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Yamaki, S., Fujii, T., Yajima, R. et al. Clinicopathological significance of decreased galectin-3 expression and the long-term prognosis in patients with breast cancer. Surg Today 43, 901–905 (2013). https://doi.org/10.1007/s00595-012-0378-3
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DOI: https://doi.org/10.1007/s00595-012-0378-3