RRC ID 36960
Author Fujita K, Iwama H, Sakamoto T, Okura R, Kobayashi K, Takano J, Katsura A, Tatsuta M, Maeda E, Mimura S, Nomura T, Tani J, Miyoshi H, Morishita A, Yoneyama H, Yamana Y, Himoto T, Okano K, Suzuki Y, Niki T, Hirashima M, Masaki T.
Title Galectin-9 suppresses the growth of hepatocellular carcinoma via apoptosis in vitro and in vivo.
Journal Int. J. Oncol.
Abstract Galectin-9, a soluble β-galactoside-binding animal lectin, evokes apoptosis in various human cancer cell lines. The galectin-9 antitumor effect against hepatocellular carcinoma (HCC) is, however, unknown. We investigated whether galectin-9 suppresses HCC growth in vitro and in vivo. We assessed the antitumor effect of galectin-9 on HCC cells by conducting WST-8 assay in vitro and xenograft model analysis in vivo. Galectin-9-induced apoptosis was evaluated by FACS and ELISA in vitro and by TUNEL stain in vivo. Cell cycle alteration was profiled by FACS. Caspases were profiled by colorimetry. MicroRNAs related to the galectin-9 antitumor effects were determined using microarrays, and their antitumor effect was confirmed in a transfection study in vitro. The expression levels of the target proteins of the miRNAs extracted above were analyzed by western blot analysis. To summarize the results, galectin-9 inhibited the growth of the HCC cell lines HLE and Li-7 in vitro and Li-7 in vivo inducing apoptosis. Cell cycle turnover was not arrested in HLE and Li-7 cells in vitro. miR-1246 was similarly extracted both in vitro and in vivo, which sensitized Li-7 cells to apoptosis when transfected into the cells. DYRK1A, a target protein of miR-1246 was downregulated in Li-7 cells. Caspase-9 was upregulated in Li-7 cells in vitro and in vivo. In conclusion, galectin-9 inhibited the growth of HCC cells by apoptosis, but not cell cycle arrest, in vitro and in vivo. miR-1246 mediated signals of galectin-9, possibly through miR-1246-DYRK1A-caspase-9 axis. Galectin-9 might be a candidate agent for HCC chemotherapy.
Volume 46(6)
Pages 2419-30
Published 2015
DOI 10.3892/ijo.2015.2941
PMID 25823465
MeSH Animals Apoptosis Carcinoma, Hepatocellular / genetics Carcinoma, Hepatocellular / metabolism* Carcinoma, Hepatocellular / pathology* Caspase 9 / genetics Cell Cycle Cell Line, Tumor Cell Proliferation Female Galectins / genetics Galectins / metabolism* Humans Liver Neoplasms / metabolism Liver Neoplasms / pathology* Mice MicroRNAs / metabolism* Neoplasm Transplantation Protein-Serine-Threonine Kinases / genetics Protein-Tyrosine Kinases / genetics
IF 3.333
Times Cited 10
Human and Animal Cells