Loss of RUNX3 expression by histone deacetylation is associated with biliary tract carcinogenesis

被引:13
|
作者
Shio, Seiji [1 ,2 ]
Kodama, Yuzo [1 ,2 ]
Ida, Hiroshi [1 ,2 ]
Shiokawa, Masahiro [1 ,2 ]
Kitamura, Koji [3 ]
Hatano, Etsuro [3 ]
Uemoto, Shinji [3 ]
Chiba, Tsutomu [1 ,2 ]
机构
[1] Kyoto Univ, Grad Sch Med, Dept Gastroenterol, Kyoto, Japan
[2] Kyoto Univ, Grad Sch Med, Dept Hepatol, Kyoto, Japan
[3] Kyoto Univ, Grad Sch Med, Dept Surg, Kyoto, Japan
关键词
HYDROXAMIC ACID VORINOSTAT; CELL-GROWTH; TUMOR-SUPPRESSOR; GENE-EXPRESSION; GASTRIC-CANCER; HYPERMETHYLATION; CHOLANGIOCARCINOMA; METHYLATION; INHIBITOR; CARCINOMA;
D O I
10.1111/j.1349-7006.2011.01848.x
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
RUNX3 is a candidate tumor suppressor gene localized in 1p36, a region frequently inactivated through hypermethylation, histone modulation, and other processes in various human tumors. In this study, to elucidate a causal link between RUNX3 expression and biliary tract cancer, we investigated 17 human biliary cancer specimens. In addition, to examine roles of RUNX3 in biliary tract cancer, we restored silenced RUNX3 in the human biliary cancer cell line Mz-ChA-2 using a histone deacetylase inhibitor. Thirteen of 17 human cancer specimens exhibited suppressed RUNX3 expression compared with normal biliary ducts. Moreover, the decreased RUNX3 expression was related to a lower accumulation of acetylated histone H3 associated with RUNX3. In in vitro experiments, vorinostat, a member of a new class of highly potent histone deacetylase inhibitors, restored RUNX3 expression in Mz-ChA-2 cells. Furthermore, vorinostat-induced RUNX3 significantly enhanced p21 expression and growth inhibition of Mz-ChA-2 cells through restoration of TGF-beta signaling. These data suggest the significance of histone deacetylation-associated suppression of RUNX3 expression in biliary tract carcinogenesis. Furthermore, vorinostat might hold promise for treating biliary tract cancer through enhancement of TGF-beta signaling by restoration of RUNX3. (Cancer Sci 2011; 102: 776-783)
引用
收藏
页码:776 / 783
页数:8
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