Journal
JOURNAL OF CANCER
Volume 8, Issue 18, Pages 3733-3741Publisher
IVYSPRING INT PUBL
DOI: 10.7150/jca.20814
Keywords
epithelial ovarian cancer; Galectin-1; NF-kappa B signaling pathway; matrix metalloproteinase-2; matrix metalloproteinase-9; migration and invasion
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Funding
- National Natural Science Foundation of China [81101996]
- Planned Science and Technology Project of Hunan Province, China [2014FJ2015]
- Chinese Anti-Cancer Association [29]
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Purpose: We previously reported that Galectin-1 (Gal-1) played a role in epithelial ovarian cancer (EOC) progression. In this study, we aimed to further investigate the association between Gal-1 expression and prognosis in EOC patients and tried to reveal some novel potential mechanisms of Gal-1 in EOC invasion and migration. Materials and Methods: Gal-1 and nucleus NF-kappa Bp65 expression in 109 human epithelial ovarian cancer tissue specimens were evaluated by immunohistochemistry. The Cox model and survival curves were used to investigate the effect of Gal-1 on EOC prognosis. Correlation between Gal-1 expression and NF-kappa B activation in EOC patients was also analyzed. In vitro experiments were further performed to reveal the function and mechanisms of Gal-1 in invasion and migration of EOC cells. Results: Expression level of Gal-1 in EOC tissue was an independent prognostic factor on overall survival (p<0.05) and progression-free survival (p<0.05). Patients with high Galectin-1 expression had shorter overall survival (OS, p<0.05)) and progression-free survival (PFS, p<0.05). Immunohistochemistry revealed that expression of Gal-1 was positively associated with activation of NF-kappa Bp65 in EOC tissues (Kappa coefficient=0.458, p<0.001). Patients with tumors concomitantly co-over-expressing Gal-1 and NF-kappa Bp65 had the worse OS (p<0.001) and PFS (p<0.001). The abilities of migration and invasion for EOC cells were significantly reduced after Gal-1 knocked-down in human EOC cell line HO8910, which was accompanied with the suppression of NF-kappa b pathway activation and with the matrix metalloproteinase-2 and matrix metalloproteinase-9 down-regulation. Conclusions: Our results suggest that Gal-1 is associated with poor outcome in EOC and Galectin-1 promotes tumor progression via NF-kappa B pathway activation in EOC.
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