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Galectin-1 Accumulation in the Ovary Carcinoma Peritumoral Stroma Is Induced by Ovary Carcinoma Cells and Affects Both Cancer Cell Proliferation and Adhesion to Laminin-1 and Fibronectin
Open accessAbstract
Galectin-1 (gal-1) is a 14-kDa laminin-binding galectin involved in several biologic events including regulation of cancer cell proliferation and adhesion to the matrix. In this study, we examined gal-1 expression in 30 human epithelial ovary carcinoma samples by Western and Northern blotting and by immunohistochemistry. Gal-1 mRNA levels were increased in more than 95% of the examined ovary carcinoma samples, compared with a wedge resection of a normal ovary. Immunohistochemical analysis of the samples demonstrated gal-1 expression in cancer epithelial cells from 17 of 30 samples, with a cytoplasmic pattern. Gal-1 immunostaining was significantly increased in the stroma associated with carcinoma cells compared with the normal, noninvaded stroma (p = 0.003). This pattern of expression was confirmed by examination of 12 other frozen epithelial ovary carcinomas, using in situ hybridization. Immunohistochemical staining of the specimens demonstrated colocalization of gal-1, laminin-1, and fibronectin. In vitro experiments were conducted to elucidate the potential biologic role of gal-1 in ovarian cancer progression. Gal-1 protein expression and release was detected in AZ364, SK-OV-3, and AZ224, but not in OVCAR-3, AZ419, and AZ382, human ovary carcinoma cell lines. Incubation of 84BR fibroblasts with conditioned media harvested from the ovary carcinoma cell lines induced an increased expression of gal-1 in the cultured fibroblasts in all cases except AZ419 and SK-OV-3. High concentrations of gal-1 (100 micro g/ml) induced significantly decreased cell proliferation in all cell lines, as defined by bromodeoxyuridine incorporation. Additionally, recombinant gal-1 induced a dose-dependent increase in in vitro adhesion of AZ224, SK-OV-3, and AZ382 cells to laminin-1; adhesion to fibronectin was increased by gal-1 in OVCAR-3, AZ224, and SK-OV-3. No effect was observed in the other cases. Our data contribute to define a role for gal-1 during the interactions between human ovary carcinoma cells and host fibroblasts.
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Citations
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Metadata
- Authors
- van den Brûle, F., Califice, S., Garnier, F., Fernandez, P. L., Berchuck, A., & Castronovo, V.
- Venue
- Laboratory Investigation
- Publisher
- Elsevier BV
- Published
- 2003-03
- Volume
- 83
- Issue
- 3
- Pages
- 377-386
- ISSN
- 0023-6837 (ISSN-L)
- OpenAlex
- W1977298105
- Cited by
- 176
- References
- 0
- FWCI
- 2.81
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- van den Brûle, F., Califice, S., Garnier, F., Fernandez, P. L., Berchuck, A., & Castronovo, V. (2003). Galectin-1 Accumulation in the Ovary Carcinoma Peritumoral Stroma Is Induced by Ovary Carcinoma Cells and Affects Both Cancer Cell Proliferation and Adhesion to Laminin-1 and Fibronectin. Laboratory Investigation. https://doi.org/10.1097/01.lab.0000059949.01480.40
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