Journal
CANCER LETTERS
Volume 301, Issue 1, Pages 38-46Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.canlet.2010.10.027
Keywords
Colorectal cancer; Galectins; Galectin-1; LGALS1; Promoter hypermethylation; Apoptosis; Wnt signaling
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Funding
- NIH [RO1 CA106625]
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Galectin-1 (gal-1) is an important molecule secreted by many tumors, which induces apoptosis in activated T-cells and promotes tumor angiogenesis, both of which phenomena facilitate successful establishment of tumor in the body. However, little is known about the function of intracellular gal-1 or its transcriptional regulation in colorectal cancer (CRC). Here, we demonstrate that gal-1 expression is epigenetically regulated in CRC through promoter hypermethylation. Intracellular gal-1 induces cell cycle arrest and apoptosis in CRC cells with concomitant down-regulation of Wnt and NF-kappa B signaling pathways. Together, these data suggested that gal-1 silencing imparts CRC with the ability to proliferate and escape apoptosis. (C) 2010 Elsevier Ireland Ltd. All rights reserved.
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